Keyboards / Compare

Keychron K3 HE vs NuPhy Air75 HE

A

Product A: Keychron

K3 HE

91 of 164 known

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B

Product B: NuPhy

Air75 HE

88 of 164 known

Change NuPhy Air75 HE

Compare the Keychron K3 HE with

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All 164 fields

Every value links to where we found it.

Only differences

AKeychron K3 HE

BNuPhy Air75 HE

General

4 of 9 differ

Series

K HE1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Air HE4Reviewrtings.com/keyboard/reviews/nuphy/air75-heRead 23 October 2026Public exact-model introduction calls this the Air HE series.

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

K3H-F1, K3H-F1-BO, K3H-F1-DE, K3H-F1-UK, K3H-Q11Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Keyboard Air75 HE(Silver/Magnetic Jade), Keyboard Air75 HE(Silver/POM|Magnetic Jade)5Maker product pagepay.nuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboard.jsRead 23 October 2026Only Jade and Jade Pro configurations with optional wrist rest None and optional keycaps None. Maker labels Jade Pro boxes POM Magnetic Jade.

GTIN / EAN

4894979045614, 4894979067913, 4894979067906, 4894979066121, 48949790456212Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboard.jsonRead 14 October 2026Barcodes of the five store variants, K3H-F1, K3H-Q1, K3H-F1-BO, K3H-F1-DE and K3H-F1-UK.

6976604917270, 69766049172875Maker product pagepay.nuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboard.jsRead 23 October 2026Exact barcodes of the two base switch configurations.

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

February 20267Press articlemechkeys.com/ja/blogs/news/keychron-launches-k3-he-and-k3-ultra-low-profile-wireless-keyboards-on-february-12Read 14 October 2026Article dated 2026-02-10 reports the announcement and a February 12 launch date.

Not available

Status

Available1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Available1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Current maker page states in stock and ships in one to two business days.

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

Not available

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

$119.991Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 20265Reviewtechradar.com/computing/keyboards/keychron-k3-he-reviewRead 14 October 2026Review published 2026-05-30 lists $119.99 and says the board is available now in black and white. The maker store shows the same price.

Not available

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

Not available

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

Not available

Not available

ColoursiThe maker's own colour names

Black, White1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026Black and White. The ISO layouts are sold in Black only.

Silver5Maker product pagepay.nuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboard.jsRead 23 October 2026Maker SKU names both configurations Silver.

Segment

Gaming1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Gaming1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

Sold asiParts fitted when sold. A complete keyboard includes switches and keycaps. Barebones includes neither.

Complete1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Complete1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

Layout

3 of 12 differ

Form factoriLayout size or shape. A percentage describes the layout, not the number of keys.

75 %1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

75 %1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

Layout standardiPhysical key layout standards sold for this model. Regional language names are listed separately.

ANSI, ISO1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

ANSI1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

Regional layouts

ANSI, ISO-Nordic, ISO-German, ISO-UK1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026ISO-Nordic is listed on the page as a pre-order that ships later than the other layouts.

Not available

Keys in regional layoutiPhysical typing and function keys in the stated regional layout. Separate media buttons, macro buttons and rotary controls are excluded. A Touch ID or Lock key in a key row counts, as on Apple keyboards.

843Owner's manualcdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron_K3_HE_User_Manual.pdfRead 14 October 2026Specification page states number of keys 84. This is the ANSI count. ISO key count is not published.

841Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Exact Air75 HE technical specification, not Air60 HE.

Key legends for

macOS, Windows1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Windows1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Stock bottom row in exact product render has Windows legends. macOS replacement legends are not assumed from compatibility alone.

Numpad

No1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

No6Owner's manualcdn.shopify.com/s/files/1/0268/7297/1373/files/NuPhy_Air75_HE_Quick_Guide.pdfRead 23 October 2026

Function row

Yes1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Yes6Owner's manualcdn.shopify.com/s/files/1/0268/7297/1373/files/NuPhy_Air75_HE_Quick_Guide.pdfRead 23 October 2026

Dedicated arrow keys

Yes1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Yes6Owner's manualcdn.shopify.com/s/files/1/0268/7297/1373/files/NuPhy_Air75_HE_Quick_Guide.pdfRead 23 October 2026Complete section 2 layout and section 3 lighting shortcuts show dedicated arrows. Complete layout establishes F row, row stagger and no numpad.

Navigation keysiAvailability of Home, End, Page Up and Page Down as dedicated keys or through an Fn layer.

Compact1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Compact1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Exact product top render shows Home, End, Page Up and Page Down in the right-side column.

Key stagger

Row-staggered1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Row-staggered6Owner's manualcdn.shopify.com/s/files/1/0268/7297/1373/files/NuPhy_Air75_HE_Quick_Guide.pdfRead 23 October 2026

Bottom row

Not available

Not available

Low profile

Yes1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Yes1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

Switches

11 of 25 differ

Switch sensing technologyiKey sensing technology. Hall effect and TMR are different sensor types. A mixed board is identified explicitly. Magnetic switch housing alone does not identify the sensor.

Magnetic (Hall effect)1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026Page says the Ultra-Fast Lime low-profile magnetic switches are powered by Hall Effect sensing.

Magnetic (Hall effect)1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Performance section explicitly describes individual Hall effect sensors.

Switch feel

Linear6Reviewhlplanet.com/keychron-k3-he-reviewRead 14 October 2026Reviewer describes pre-lubed POM linear switches. The maker page does not name the feel.

Linear8Maker product pagegateron.com/products/gateron-low-profile-magnetic-jade-switchRead 23 October 20269Maker product pagegateron.com/products/gateron-full-pom-low-profile-magnetic-jade-pro-switch-setRead 23 October 2026Exact Full POM Low Profile Magnetic Jade Pro is linear.

Switch maker

Keychron1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Gateron1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

Switch models

Keychron Ultra-Fast Lime Low-Profile Magnetic Switch1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Low-Profile Magnetic Jade, Low-Profile Magnetic Jade Pro1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

Switch stem

Not available

MX cross7Reviewdamiancooper.medium.com/nuphy-air75he-review-the-magnetic-keyboard-that-finally-gets-it-right-48b4793089aeRead 23 October 2026Gaming Performance section explicitly says Cherry keycaps are compatible with Air75 HE.

Actuation forceiForce at the point where a key registers. Initial spring force is not actuation force. Adjustable switches require a stated actuation setting.

Not available

Not available

Bottom-out forceiForce at the end of the switch travel. It is not the initial spring force or the tactile peak.

Not available

50 to 60gf5Maker product pagepay.nuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboard.jsRead 23 October 202610Maker product pagepay.nuphy.com/products/gateron-low-profile-magnetic-jade-switchesRead 23 October 202611Maker product pagepay.nuphy.com/products/gateron-low-profile-magnetic-jade-pro-switchesRead 23 October 2026

Tactile bump forceiPeak force of the tactile bump. It is not the force at initial movement or at bottom-out.

Not available

Not available

Actuation pointiDistance before a key registers. For adjustable boards, the default profile or setting is stated in the source note.

Not available

Not available

Total travel

Not available

3.5mm8Maker product pagegateron.com/products/gateron-low-profile-magnetic-jade-switchRead 23 October 2026Exact low-profile Jade switch maker specifies physical travel 3.5 +/- 0.2 mm. This is distinct from selectable actuation ending at 3.3 mm.9Maker product pagegateron.com/products/gateron-full-pom-low-profile-magnetic-jade-pro-switch-setRead 23 October 2026Physical travel 3.5 +/- 0.2 mm.

Rated keystrokes

Not available

100million10Maker product pagepay.nuphy.com/products/gateron-low-profile-magnetic-jade-switchesRead 23 October 2026NuPhy exact switch page: 100 million clicks. Compatibility explicitly includes Air75 HE.11Maker product pagepay.nuphy.com/products/gateron-low-profile-magnetic-jade-pro-switchesRead 23 October 2026100 million clicks and Air75 HE compatibility.

Factory-lubed switches

Yes1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026Page says the switches are pre-lubed.

Yes8Maker product pagegateron.com/products/gateron-low-profile-magnetic-jade-switchRead 23 October 2026Exact switch specification: factory pre-lubed.9Maker product pagegateron.com/products/gateron-full-pom-low-profile-magnetic-jade-pro-switch-setRead 23 October 2026Exact switch specification: factory pre-lubed.

Adjustable actuation

Yes1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Yes1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

Actuation rangeiSelectable actuation distances. These are settings, not a measured usable travel range.

Min0.2Max2.9mm1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026Published as 0.2 to 2.9 mm. TechRadar reports 0.2 to 2.8 mm, the maker value is used.

Min0.1Max3.3mm1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Exact Air75 HE page states this range applies to both low-profile Jade and Jade Pro.

Actuation stepiSmallest documented increment between selectable actuation settings.

0.1mm1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026Page says actuation points can be adjusted from 0.2 to 2.9 mm with 0.1 mm sensitivity.

0.1mm7Reviewdamiancooper.medium.com/nuphy-air75he-review-the-magnetic-keyboard-that-finally-gets-it-right-48b4793089aeRead 23 October 2026Software list item 5 explicitly distinguishes 0.01 mm RT precision and 0.1 mm AP precision. This December 2024 review does not name firmware. The 0.02 mm Air60 HE result is not transferred.

Per-key actuationiActuation can be configured individually for supported keys. The source note identifies any excluded keys.

Yes1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026Page says each key can be customized.

Yes1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026NuPhyIO section describes per-key rapid-trigger and sensitivity annotations.

Rapid trigger

Yes1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Yes1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

Minimum rapid trigger movementiSmallest selectable movement used to reset or reactivate a key. This is a setting, not measured accuracy.

0.1mm1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026Spec table lists Rapid Trigger sensitivity 0.1 mm.

0.01mm1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Rapid Trigger paragraph explicitly says 0.01 mm break.

Multi-action keys

Yes1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026Dynamic keystrokes, up to four actions per key by press depth.

Yes1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Dynamic Keystroke supports up to four actions per stroke. Mod Tap, Toggle Key and Hyper Tap also described.

SOCD handling

Yes1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026Last Key Priority (LKP) and Snap Click, both disabled by default.

Yes1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Hall Effect paragraph names SOCD and Rapid Shift.

Analog inputiCan send variable gamepad or joystick input. Magnetic sensing or adjustable actuation alone does not establish analog output.

Yes1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026Analog Mode gives variable gamepad-style input. Listed as Gamepad Analog in the low-profile series comparison.

Not available

Hot-swap socketsiSwitches can be replaced without soldering. Magnetic compatibility must be checked separately.

Magnetic1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026Spec table: compatible with Keychron Ultra-Fast Lime Low-Profile magnetic switch only.

Magnetic1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Maker requires power off before replacing magnetic switches.

Compatible switches

Keychron Ultra-Fast Lime Low-Profile magnetic switch only1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Gateron Low-Profile Magnetic Jade and Low-Profile Magnetic Jade Pro switches7Reviewdamiancooper.medium.com/nuphy-air75he-review-the-magnetic-keyboard-that-finally-gets-it-right-48b4793089aeRead 23 October 2026Exact-model review identifies the low-profile Jade Mini and Pro Mini as the hot-swap options.

Stabilizers

Plate-mounted1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026Spec table lists a plate-mounted stabilizer.

Plate-mounted1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

Factory-lubed stabilizers

Not available

Yes4Reviewrtings.com/keyboard/reviews/nuphy/air75-heRead 23 October 2026Public exact-model Gaming and Office verdicts explicitly state pre-lubed switches and stabilizers. No membership-only result cells used.

Keycaps

2 of 5 differ

Keycap material

PBT1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Other1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Mixed PBT primary caps and PC accent caps. The box list distinguishes extra PBT and extra PC caps and the exact product render shows fitted transparent accent caps. other represents the mixed set.

Legend method

Doubleshot1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Dye-sub1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Maker Keycaps paragraph explicitly states five-sided dye-sub nSA.

Keycap profile

Low profile1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026LSA, low-profile spherical-angled keycaps.

Low profile1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Maker nSA is low profile.

Keycap thickness

Not available

Not available

Shine-through legendsiLight passes through the legends. Translucent keycap sides alone do not count.

No1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

No4Reviewrtings.com/keyboard/reviews/nuphy/air75-heRead 23 October 2026Public review says stock caps lack proper shine-through legends. Transparent accent plastic is not shine-through legends. Optional Canopus caps excluded.

Performance

9 of 11 differ

Polling rate per connectioniDocumented report rates for each connection. Required receivers or optional adapters are identified in the row and source note.

AKeychron K3 HE

Connection	Polling rate (Hz)	Receiver or adapter
USB (wired)	1,000	Not available
2.4 GHz	1,000	Included Type-A 2.4 GHz receiver
Bluetooth	125	Not available

Source1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 20261000 Hz in wired and 2.4 GHz modes, 125 Hz over Bluetooth.

BNuPhy Air75 HE

Connection	Polling rate (Hz)
USB (wired)	8,000

Source1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

Max polling rate

1,000Hz=CalculatedFrom Polling rate per connection

8,000Hz=CalculatedFrom Polling rate per connection

Polling rate (wired)

1,000Hz=CalculatedFrom Polling rate per connection

8,000Hz=CalculatedFrom Polling rate per connection

Polling rate (2.4 GHz)

1,000Hz=CalculatedFrom Polling rate per connection

Not available

Polling rate (Bluetooth)

125Hz=CalculatedFrom Polling rate per connection

Not available

Scan rateiHow often the keyboard reads its switches. A USB report rate does not establish a scan rate.

Not available

8,000Hz1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Technical specifications explicitly list 8000 Hz PCB scan separately from wired polling.

Input latency (claimed)iMaker-published input or response latency with conditions in the source note. Do not calculate this from polling rate.

Not available

0.1ms1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Detailed maker test claims 0.1 ms using CMSIS-DAP, electronic Enter switch closure and subtraction of instrument intrinsic delay. Excludes switch pre-travel. Feature bullets instead say 0.125 ms. Detailed test claim retained as claimed latency.

Key rollover per connectioniKeys registered simultaneously over the stated connection. Connection is omitted if the source does not specify it.

AKeychron K3 HE

Connection	Rollover
USB (wired)	NKRO
2.4 GHz	NKRO
Bluetooth	NKRO

Source1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026Page lists N-key rollover as Yes for wireless and wired. Wireless covers both 2.4 GHz and Bluetooth.

BNuPhy Air75 HE

Connection	Rollover
USB (wired)	NKRO

Source1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Technical specifications say N-key rollover. This is explicitly wired-only.

Anti-ghosting

Not available

Yes12Spec databasee-catalog.com/NUPHY-AIR75-HE-JADE-SWITCH.htmRead 23 October 2026Exact Jade Switch model specification lists anti-ghosting and N-KRO. No wireless or sibling-model value used.

Adjustable debounce

Not available

Not available

Minimum debounce

Not available

Not available

Measured

None of 7 known

Latency per connection (measured)iReviewer measurements for one tested setup per row. Settings and test method are stated in the source note. Missing conditions are not inferred.

Not available

Not available

Actuation point (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Total travel (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Operating force (measured)iReviewer-measured force at actuation. The switch and actuation setting are stated in the source note.

Not available

Not available

Typing noise (measured)iReviewer-measured A-weighted typing sound level. Measurement distance and conditions are stated in the source note.

Not available

Not available

Battery life (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Not available

Weight (measured)iReviewer-measured keyboard weight without cable or wrist rest. The tested configuration is stated in the source note.

Not available

Not available

Connectivity

10 of 18 differ

Connections

USB (wired), 2.4 GHz, Bluetooth1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

USB (wired)1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Maker feature list explicitly says wired only. No wireless or battery fields stored.

Wireless technology

Not available

Not available

Bluetooth

5.21Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Not available

Bluetooth device slots

31Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Not available

Devices it can switch betweeniDistinct device connections available for switching. Do not infer this by adding wireless modes or paired Bluetooth slots.

Not available

Not available

Device switchingiControl used to switch between paired device hosts. Connection-mode and OS switches are described separately.

Keys3Owner's manualcdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron_K3_HE_User_Manual.pdfRead 14 October 2026Fn+1, Fn+2 and Fn+3 select Bluetooth hosts.

Not available

Receiver connector

USB-A1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

None1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026The keyboard is explicitly wired-only and uses no receiver.

Receiver storage in keyboard

Not available

Not available

Receiver shared with other devices

Not available

Not available

Wireless range

10m3Owner's manualcdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron_K3_HE_User_Manual.pdfRead 14 October 2026Bluetooth operating distance within 10 meters in open space.

Not available

Detachable cable

Yes3Owner's manualcdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron_K3_HE_User_Manual.pdfRead 14 October 2026Charging and wired mode use a Type-C cable plugged into the keyboard port.

Yes6Owner's manualcdn.shopify.com/s/files/1/0268/7297/1373/files/NuPhy_Air75_HE_Quick_Guide.pdfRead 23 October 2026

Port on keyboard

USB-C1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

USB-C6Owner's manualcdn.shopify.com/s/files/1/0268/7297/1373/files/NuPhy_Air75_HE_Quick_Guide.pdfRead 23 October 2026Section 2 rear-edge diagram shows the USB-C socket. Separate cable is in the maker box list.

Cable plug

USB-C6Reviewhlplanet.com/keychron-k3-he-reviewRead 14 October 2026Reviewer lists a USB-C cable plus USB-A-to-C and C-to-A adapters. The manual lists a Type-C cable and a Type-A to Type-C adapter.

USB-A12Spec databasee-catalog.com/NUPHY-AIR75-HE-JADE-SWITCH.htmRead 23 October 2026Exact model table: USB-A cable with removable connection and USB-C port on keyboard.

Cable

Braided6Reviewhlplanet.com/keychron-k3-he-reviewRead 14 October 2026Reviewer describes a braided right-angled USB-C cable.

Not available

Cable length

Not available

1.5m1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

USB passthrough

Not available

Not available

Works withiSystems on which the keyboard works. Configuration software may have narrower system support.

Windows, macOS, Linux1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Windows, macOS, Linux, Android, iOS1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

Consoles

Not available

Not available

Battery

8 of 16 differ

Battery type

Li-Po1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Not available

Number of batteriesiNumber of replaceable AA or AAA cells required. Internal rechargeable battery packs are not counted here.

Not available

Not available

Battery capacity

2,600mAh1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Not available

User-replaceable battery

Not available

Not available

Battery life per mode (claimed)iMaker estimates. Store one published native duration unit per row: hours, days or months. Days and months describe calendar use including idle time, not continuous runtime. Do not convert calendar estimates into hours. Connection, lighting and polling rate are included only when published. Brightness, workload, screen status, sleep settings and up-to qualifiers go in the source note.

AKeychron K3 HE

Hours (h)
55

Source1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026Published as up to 55 hours, lab test results may vary. Connection, lighting and polling rate are not stated.

BNuPhy Air75 HE

Not available

Longest battery life (claimed)iLongest maker estimate published in hours across the listed modes. Rows published in days or months do not contribute. Conditions can differ between products.

55h=CalculatedFrom Battery life per mode (claimed)

Not available

Battery life, lighting offiLongest maker estimate published in hours with lighting off. Calendar-day and calendar-month estimates are not converted and do not contribute.

Not available

Not available

Battery life, lighting oniLongest maker estimate published in hours with lighting enabled. Calendar-day and calendar-month estimates are not converted and do not contribute. Brightness and display conditions are stated in the source note.

Not available

Not available

Battery life, backlight on (claimed)iLongest maker up-to estimate published in calendar days with backlighting enabled. Includes idle time and the source-defined usage pattern, not continuous runtime. Brightness, workload, connection and sleep conditions remain in the table and source note. Hours and months are not converted.

Not available

Not available

Battery life, backlight off (claimed)iLongest maker up-to estimate published in calendar months with backlighting off. Includes idle time and the source-defined usage pattern, not continuous runtime. Workload, connection and sleep conditions remain in the table and source note. Hours and days are not converted.

Not available

Not available

Charging port

USB-C1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Not available

Full charge timeiPublished time for a full charge. Approximate times remain qualified in the source note.

228min3Owner's manualcdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron_K3_HE_User_Manual.pdfRead 14 October 2026Around 3.8 hours. Manual recommends 5 V 1 A or USB 3.0.

Not available

Quick charge

Not available

Not available

Use while charging

Yes3Owner's manualcdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron_K3_HE_User_Manual.pdfRead 14 October 2026Manual says the keyboard can be charged in 2.4GHz, cable and Bluetooth mode.

Not available

Solar charging

Not available

Not available

Battery indicator

LED3Owner's manualcdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron_K3_HE_User_Manual.pdfRead 14 October 2026Power indicator LED blinks red when low, stays red while charging and turns green when full. A Batt key is listed on layers 1 and 3.

Not available

Build

5 of 8 differ

Case material

Aluminum and wood frame with ABS plastic bottom case1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026Body material aluminum plus wood, bottom case ABS plastic.

Aluminum top case, ABS bottom case1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

Plate material

Aluminium1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Not available

Mount style

Tray1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Top1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

Flex cuts in PCB

Not available

Not available

Sound dampeningiDampening layers the maker or a review names. Foam whose position in the stack is not stated is foam. Films, pads and silicone parts that fit no other option are other.

Case foam, Silicone bottom, Foam, position not stated, Other1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026Sound-absorbing foam of unstated position, bottom case acoustic foam, silicone bottom pad and PET film. Foam of unstated position is stored as foam and PET film as other.

PCB foam, Plate foam, Silicone bottom1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Sound paragraph names PCB foam, plate foam and bottom silicone. No other pad or film inferred.

Typing anglesiKeyboard slope for each supported foot position, starting with the lowest. An adjustable-foot count does not establish angles. When the maker publishes only the angle with the feet out, that angle is stored alone.

2°, 4.5°, 7.5°1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026Spec table angle 2, 4.5 and 7.5 degrees, feet height 2 mm.

3°, 7°, 10°1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

Spill resistant

Not available

Not available

IP rating

Not available

Not available

Lighting

2 of 7 differ

Backlight

RGB per key1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

RGB per key1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026NuPhyIO visual keyboard and per-key lighting configuration, plus south-facing RGB LEDs in technical specifications.

LED position

North-facing1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

South-facing1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

Lighting zones

Not available

Not available

Brightness levelsiSelectable onboard brightness steps. The source note states whether the off position is included.

Not available

Not available

Side or underglow lighting

Not available

Yes1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Exact page Design paragraph names sidelights. Manual section 4 documents their separate brightness, effect, color and speed settings.

Lighting sensors

Not available

Not available

Lighting sync

Not available

Not available

Controls

7 of 12 differ

Media keysiPlayback controlled by separate buttons, an Fn layer or a multifunction knob/rocker. Volume controls are listed separately, and knob presses are excluded from the separate media-button count.

Fn layer3Owner's manualcdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron_K3_HE_User_Manual.pdfRead 14 October 2026Media functions sit on the F-row in the Mac layer and on the Fn layer for Windows.

Fn layer1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Exact product keycap render shows play/pause, previous and next sharing the F row. These are shared Fn media functions, not separate buttons.

Separate media buttonsiSeparate physical buttons for playback or mute, counted once each. Fn shortcuts, macro buttons, knob presses and roller presses are excluded.

Not available

04Reviewrtings.com/keyboard/reviews/nuphy/air75-heRead 23 October 2026Public HTPC verdict explicitly says no dedicated media keys.

Volume control

Not available

Keys1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Exact product render shows mute, volume down and volume up legends on F10, F11 and F12.

Knobs

03Owner's manualcdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron_K3_HE_User_Manual.pdfRead 14 October 2026Keyboard overview lists no knob.

06Owner's manualcdn.shopify.com/s/files/1/0268/7297/1373/files/NuPhy_Air75_HE_Quick_Guide.pdfRead 23 October 2026Complete hardware diagram shows 84 typing/function keys, no separate rotary control or macro buttons.

Programmable knob

Not available

Not available

Knob press

Not available

Not available

Separate macro keysiSeparate physical keys or buttons intended for macros. Excludes ordinary remappable keys, media buttons and a dedicated software-launch button.

Not available

06Owner's manualcdn.shopify.com/s/files/1/0268/7297/1373/files/NuPhy_Air75_HE_Quick_Guide.pdfRead 23 October 2026

Built-in screen

Not available

None6Owner's manualcdn.shopify.com/s/files/1/0268/7297/1373/files/NuPhy_Air75_HE_Quick_Guide.pdfRead 23 October 2026Complete diagram has no screen, touchpad or fingerprint reader.

Touchpad

Not available

No6Owner's manualcdn.shopify.com/s/files/1/0268/7297/1373/files/NuPhy_Air75_HE_Quick_Guide.pdfRead 23 October 2026

Fingerprint reader

Not available

No6Owner's manualcdn.shopify.com/s/files/1/0268/7297/1373/files/NuPhy_Air75_HE_Quick_Guide.pdfRead 23 October 2026

OS mode switch

Switch3Owner's manualcdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron_K3_HE_User_Manual.pdfRead 14 October 2026Win/Android and Mac/iOS toggle on the left side.

Switch6Owner's manualcdn.shopify.com/s/files/1/0268/7297/1373/files/NuPhy_Air75_HE_Quick_Guide.pdfRead 23 October 2026Section 1 and rear diagram show M1 Gaming, M2 Win and M3 Mac physical selector.

Windows key lock

Not available

Yes6Owner's manualcdn.shopify.com/s/files/1/0268/7297/1373/files/NuPhy_Air75_HE_Quick_Guide.pdfRead 23 October 2026Section 1 explicitly says Gaming mode can disable Win key. RTINGS August 6, 2025 retest also confirms Windows key lock.

Software

2 of 10 differ

Software

Keychron Launcher1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

NuPhyIO1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

Software runs on

Web1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Web1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Maker explicitly supports Chromium browsers on Mac, Windows and Linux.

Open firmware

QMK1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Not available

Onboard memory

Not available

Not available

Onboard profilesiProfiles stored on the keyboard, including fixed defaults when the maker counts them. Software-only profiles are excluded.

Not available

Not available

Macros

Yes1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Yes1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

Macros stored onboardiRecorded command sequences run from keyboard storage without the configuration app. Onboard lighting or remapping alone does not establish this.

Not available

Not available

Key remapping

Yes1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

Yes1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

LayersiTotal key mapping layers including the base layer. Lighting effect layers and profile slots are excluded.

43Owner's manualcdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron_K3_HE_User_Manual.pdfRead 14 October 2026Four layers. Layers 0 and 1 for Mac, layers 2 and 3 for Windows.

41Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Maker supports 12 layers split into three modes of four layers each, including the active mode base layer.

User firmware updates

Yes3Owner's manualcdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron_K3_HE_User_Manual.pdfRead 14 October 2026Firmware update through the Keychron Launcher web app in wired mode.

Yes13Maker product pagenuphy.io/en-US/firmwareUpdateRead 23 October 2026Select Air75 HE Update History. Firmware v107 dated July 10, 2025 explicitly supports automatic firmware update by holding Escape while powering on with the driver open. v110 dated May 11, 2026 is the latest listed stable firmware. No firmware was installed during research.

Ergonomics

0 of 4 differ

Wrist rest

None3Owner's manualcdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron_K3_HE_User_Manual.pdfRead 14 October 2026No wrist rest in the box list. A silicone palm rest is a separate accessory.

None1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Reference variants choose None for separately sold Mono wrist rest.

Wrist rest material

Not available

Not available

Tenting

Not available

Not available

Tenting angles

Not available

Not available

Dimensions and weight

3 of 6 differ

DimensionsiKeyboard body dimensions with fitted keycaps, without wrist rest and with feet folded. Any different measurement condition is stated in the source note. Width is the longest side, depth runs front to back and height is the thickness. Map by size when the maker's labels differ.

Width318.62Depth126Height25.4Front height22mm(12.5 × 5 × 1 × 0.9 in)1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026Size 318.62 x 126 mm. Front height 22.0 mm and back height 25.4 mm, both including keycaps. Back height is stored as height.

Width316.4Depth132.5mm(12.5 × 5.2 in)1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Exact Air75 HE width and depth. Drawing measures 18.4 mm rear and 12.8 mm front case edges without keycap tops, so these heights are omitted.

Dimensions with wrist rest

Not available

Not available

Keyboard weightiKeyboard without cable or wrist rest. Weights that include accessories cannot be stored here. A cable that cannot be removed is included. Replaceable batteries are included, as built-in batteries are.

575g(1.3 lb)1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026Published as 575 g. The configuration is not stated.

702g(1.5 lb)1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Exact Air75 HE technical specification: 702 grams.

Weight including wrist restiKeyboard plus supplied wrist rest, excluding packaging. The source note identifies any included cable.

Not available

Not available

Box dimensions

Not available

Width185Height30Depth350mm(7.3 × 1.2 × 13.8 in)14Retailer pagetomauri.com/products/air75-he-silver-low-profile-magnetic-jadeRead 23 October 2026Distributor labels these individual package dimensions. Separate 24 kg carton weight is for 20 units and is excluded.

Box weightiOne retail package including its contents. A multi-unit shipping carton weight is excluded.

Not available

Not available

Certifications

None of 2 known

Platform certifications

Not available

Not available

Other certifications

Not available

Not available

In the box

2 of 3 differ

In the box

1x Fully Assembled Keyboard, 1x Type-C Cable, 1x Type-A to Type-C Adapter, 1x Type-A 2.4GHz Receiver, 1x Extension Adapter For Receiver, 1x Keycap & Switch Puller, 1x Screwdriver3Owner's manualcdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron_K3_HE_User_Manual.pdfRead 14 October 2026Fully assembled version package list.

Air75 HE Keyboard, 1.5 m cable, Keycap/Switch Puller, 5 Extra PBT Keycaps, 9 Extra PC Keycaps, Quick Guide/Poster1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Exact current global Air75 HE box list. Optional wrist-rest, keycaps, NuFolio, deskmat and NuPack add-ons excluded.

Cables included

AKeychron K3 HE

Type	Count
Type-C cable	1

Source3Owner's manualcdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron_K3_HE_User_Manual.pdfRead 14 October 2026

BNuPhy Air75 HE

Type	Count
USB-A to USB-C cable	1

Source1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026Maker lists one 1.5 m cable. Connector types are supported by exact-model E-Catalog entry.12Spec databasee-catalog.com/NUPHY-AIR75-HE-JADE-SWITCH.htmRead 23 October 2026

Spare switches

Not available

Not available

Links

Not compared

Product page

www.keychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboard1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

nuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboard1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

Spec sheet

Not available

Not available

Manual

cdn.shopify.com/s/files/1/0059/0630/1017/files/Keychron_K3_HE_User_Manual.pdf1Maker product pagekeychron.com/products/keychron-k3-he-wireless-magnetic-switch-custom-keyboardRead 14 October 2026

cdn.shopify.com/s/files/1/0268/7297/1373/files/NuPhy_Air75_HE_Quick_Guide.pdf1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

Not available

Not available

Warranty

0 of 1 differ

Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

1year4Maker product pagehelp-center.keychron.com/en-us/article/360021443594-how-long-is-the-keyboard-warranty-forRead 14 October 202612 months global warranty.

1year1Maker product pagenuphy.com/products/nuphy-air75-he-magnetic-switch-gaming-keyboardRead 23 October 2026One-year limited warranty from global store. Market is not named.

Both are also in the API. Back to all keyboards.