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SamsungEarbuds

Galaxy Buds3 FE

Released August 2025.3 Last checked 23 October 2026.

Form factor: In-ear
ANC: Yes
Battery life: 8.5h
With case: 30h

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All specs

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General

Series: Galaxy Buds1
Model numbers: SM-R420, SM-R420NZKAXAC, SM-R420NZKAXEF, SM-R420NZAAXEF, SM-R420NZAAEUA1 6 7 9
GTIN / EAN: 8806097620952, 88060976211647
Announced: 18 August 20252
Status: Available8
Predecessor: Samsung Galaxy Buds FE 19 20
Successor: Not available
Launch price (US): $149.992
Launch price (EU): €1494
Markets: CA, US, FR, DE, PL, GB1 2 3 4 7 8 9
Colours: Black, Gray2
Segment: Not available

Design

Form factor: In-ear2
Bud shape: Stem2
Use one bud alone: Either bud5
RGB lighting: No12

Drivers and sound

Drivers per bud: Type Diameter (mm) Count per earbud
Dynamic 11 1
Source2 7
Driver type: Dynamic2
Driver size: 11mm
Drivers per bud: 1
Diaphragm material: Not available
Frequency response: Min20 HzMax20 kHz13
Impedance: Not available
Sensitivity: Not available
Sensitivity reference: Not available
Max sample rate: Not available
Max bit depth: Not available
Adaptive EQ: Not available
Personalised sound: Not available
Onboard EQ: Not available
Custom EQ bands: 95
EQ presets: Bass boost, Treble boost, Smooth, Dynamic, Clear, Balanced5
Volume limit: Not available

Type	Diameter (mm)	Count per earbud
Dynamic	11	1

Spatial audio

Spatial audio: Samsung 360 Audio1
Head tracking: No1

Noise cancelling

Active noise cancelling: Yes1
ANC type: Not available
ANC microphones in both earbuds: Not available
Adaptive ANC: Not available
ANC levels: Not available
ANC attenuation (claimed): 32dB7
Transparency mode: Yes1
Adjustable transparency: Yes6
Automatic ANC and transparency blend: Not available
Conversation detection: No12
Wind noise reduction: Not available

Measured

Frequency response notes (measured): Default tuning closely follows the SoundGuys preference curve, with elevated bass and no pronounced emphasis from 4 to 9 kHz.5 10
Bass amount (measured): 5dB5 10
Treble amount (measured): Not available
Deviation from target (measured): Not available
Consistency between fittings (measured): Not available
Harmonic distortion (measured): 0.1%15
Sound leakage (measured): Not available
Noise isolation (measured): Not available
Noise isolation, best (measured): Not available
Passive isolation (measured): Not available
Call quality notes (measured): SoundGuys recorded quiet, office, street, windy and reverberant samples. Office and street noise remained audible. Very strong wind reduced voice clarity.5
Mic low-frequency extension (measured): Not available
Mic high-frequency extension (measured): Not available
Mic speech-to-noise ratio (measured): Not available
Latency (measured): Not available
Bluetooth latency, worst (measured): Not available
2.4 GHz latency, worst (measured): Not available
Latency in game mode (measured): Not available
Battery life (measured): ANC Hours (h)
Yes 4.43
Source5 10
Longest tested use per charge: 4.43h
Battery life with case (measured): Not available
Full charge time (measured): Not available
Weight per bud (measured): Not available

ANC	Hours (h)
Yes	4.43

Microphones and calls

Voice microphones in both earbuds: Not available
All microphones in both earbuds: 61
Bone conduction voice sensor: Not available
Mic noise reduction: AI2
Call audio bandwidth: Not available
Mic mute control: Not available
Sidetone: Yes6

Connectivity

Chip: Not available
Connections: Bluetooth2
Bluetooth: 5.41
Bluetooth codecs: AAC, SBC, Samsung Seamless1
Bluetooth profiles: A2DP, AVRCP, HFP1
LE Audio: Not available
Auracast: No5
Multipoint: No5
Multipoint devices: Not available
Multipoint with LDAC: Not available
Paired devices remembered: Not available
Automatic switching between own devices: Yes1
Fast pairing: Not available
Audio sharing: Not available
Wireless range (claimed): 10m6
Wireless receiver: Not available
Receiver connector: Not available
Simultaneous 2.4 GHz and Bluetooth audio: Not available

Latency

Low latency mode: Yes6
Claimed latency: Not available
Lowest claimed latency: Not available

Compatibility

Platforms: Android, iOS2 5
Connection per platform: Platform Connection
Android Bluetooth
iOS Bluetooth
Source14
Features that need a specific device: Feature Needs
Auto Switch Supported Galaxy devices signed into the same Samsung Account. This is automatic switching, not simultaneous Bluetooth multipoint.
Galaxy Wearable settings Android 11 or later with at least 1.5 GB RAM and Samsung Account.
360 Audio Compatible Samsung Galaxy smartphone or tablet with Android One UI 3.1 or later. Head tracking is not supported.
Live Translation and Interpreter Compatible Samsung Galaxy device with Galaxy AI. Samsung Account and supported language packages. Processing is on the phone.
Google Gemini voice wake-up Compatible phone with One UI 8.0 or later. Google Account and network can be required.
Gaming mode Samsung mobile device running Android. Enable Gaming mode under Labs. Other Bluetooth devices do not establish this mode.
Source2 6
Official licence: Not available

Platform	Connection
Android	Bluetooth
iOS	Bluetooth

Feature	Needs
Auto Switch	Supported Galaxy devices signed into the same Samsung Account. This is automatic switching, not simultaneous Bluetooth multipoint.
Galaxy Wearable settings	Android 11 or later with at least 1.5 GB RAM and Samsung Account.
360 Audio	Compatible Samsung Galaxy smartphone or tablet with Android One UI 3.1 or later. Head tracking is not supported.
Live Translation and Interpreter	Compatible Samsung Galaxy device with Galaxy AI. Samsung Account and supported language packages. Processing is on the phone.
Google Gemini voice wake-up	Compatible phone with One UI 8.0 or later. Google Account and network can be required.
Gaming mode	Samsung mobile device running Android. Enable Gaming mode under Labs. Other Bluetooth devices do not establish this mode.

Battery and charging

Battery per bud: 53mAh1
User-replaceable earbud battery: Not available
Claimed battery life: Mode Includes case recharges Hours (h)
ANC on No 6
ANC off No 8.5
ANC on Yes 24
ANC off Yes 30
Call No 4
Call Yes 18
Source2
Longest claimed use per charge: 8.5h
Playback per charge with ANC (claimed): 6h
Playback per charge without ANC (claimed): 8.5h
Total with case (claimed): 30h
Total with case and ANC (claimed): 24h
Talk time (claimed): 4h
Full charge time, buds: Not available
Charging guidance: Not available
Quick charge time: Not available
Earbud playback after quick charge: Not available

Mode	Includes case recharges	Hours (h)
ANC on	No	6
ANC off	No	8.5
ANC on	Yes	24
ANC off	Yes	30
Call	No	4
Call	Yes	18

Charging case

Case battery: 515mAh1
User-replaceable case battery: Not available
Case charging port: USB-C6
Case full charge time: Not available
Wireless charging: No5
Wireless standards: Not available
Wireless charging power: Not available
Speaker in case: Not available
Screen on case: Not available
Case works as audio transmitter: Not available

Controls

Controls: Pressure, Swipe, Voice commands6
Earbud volume control: Swipe6
Gestures: Single pinch: play or pause, answer or end a call, Double pinch: next track, Triple pinch: previous track, Pinch and hold: selected action or decline a call, Swipe up or down: volume6
Remappable controls: Yes6
Voice assistant: Bixby, Google Gemini, Google Assistant2 7

Sensors and health

In-ear detection: Yes6
Sensors: Hall sensor, Pressure sensor, Proximity sensor, Touch sensor1
Heart rate sensor: Not available
Skin temperature sensing: Not available
Hearing aid feature: Not available
Medical clearances: Not available
Hearing test: Not available
Hearing protection: Not available
Health features: Not available

Fit and durability

Ear tips included: S, M, L7
Ear tip materials: Silicone11 13
Stabilisers: None12
Ear tip fit test: Yes6
Dust and water rating, buds: IP542
Dust and water rating, case: Not available
Water resistance depth: Not available

Software

Companion app: Galaxy Wearable6
App platforms: Android6
User firmware updates: Yes6
Finding network: Samsung Find1
Precision finding: Not available
Live translation: Yes2

Dimensions and weight

Front and side, drawn to scale.

Weight per bud: 5g(0.2 oz)1
Bud dimensions: Width18Height21.1Depth33.8mm(0.7 × 0.8 × 1.3 in)1
Case weight: 41.8g(1.5 oz)1
Case dimensions: Width58.9Height48.7Depth24.4mm(2.3 × 1.9 × 1 in)1

Certifications

Hi-Res Audio: Not available
Communication certifications: Not available
FCC IDs: A3LSMR420L, A3LSMR420R16 17
Other certifications: Not available

In the box

In the box: Galaxy Buds3 FE earbuds, Charging case, Three pairs of ear tips (S, M, L), User documentation7
Cables included: Not available

Warranty

Manufacturer warranty (source market): 2years18

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Variants

Each variant lists only what differs from the specs above.

Model number	GTIN	Markets	Colours	In the box
SM-R420NZKAXEF	8806097620952	FR	Black	Galaxy Buds3 FE earbuds, Charging case, Three pairs of ear tips (S, M, L), User documentation
SM-R420NZAAXEF	8806097621164	FR	Gray	Galaxy Buds3 FE earbuds, Charging case, Three pairs of ear tips (S, M, L), User documentation

Sources

We read 20 sources for this earbuds. The numbers match the markers in the sheet.

Maker product pagesamsung.com/ca/business/audio-sound/galaxy-buds/galaxy-buds3-fe-black-sm-r420nzkaxac
Read 7 October 2026Backs 21 fields
Press releasenews.samsung.com/us/samsung-introduces-galaxy-buds3-fe-iconic-design-enhanced-sound-galaxy-ai-integration
Read 7 October 2026Backs 16 fields
Press releasenews.samsung.com/pl/ruszyla-sprzedaz-samsung-galaxy-buds3-fe-inteligentny-dzwiek-i-odwazny-styl-w-atrakcyjnej-cenie
Read 7 October 2026Backs 2 fields
Press releasenews.samsung.com/de/ikonisches-design-satter-klang-und-komfortable-nutzung-die-samsung-galaxy-buds3-fe-mit-galaxy-ai
Read 7 October 2026Backs 2 fields
Measurementsoundguys.com/samsung-galaxy-buds-3-fe-review-144120
Read 7 October 2026Backs 11 fields
Owner's manualorg.downloadcenter.samsung.com/downloadfile/ContentsFile.aspx
Read 7 October 2026Backs 17 fields
Maker spec sheet (PDF)boulanger.scene7.com/is/content/Boulanger/8806097620952_f_0
Read 7 October 2026Backs 10 fields
Maker product pagesamsung.com/fr/audio-sound/galaxy-buds/galaxy-buds3-fe-black-sm-r420nzkaxef
Read 7 October 2026Backs 2 fields
Maker product pagesamsung.com/uk/audio-sound/galaxy-buds/galaxy-buds3-fe-grey-sm-r420nzaaeua
Read 7 October 2026Backs 2 fields
Measurementsoundguys.com/how-we-test
Read 7 October 2026Backs 3 fields
Reviewsoundguys.com/product/samsung-galaxy-buds-3-fe
Read 7 October 2026Backs 1 field
Reviewwired.com/review/samsung-galaxy-buds3-fe
Read 7 October 2026Backs 3 fields
Reviewnotebookcheck.net/Premium-mid-range-headphones-with-bargain-appeal-Samsung-Galaxy-Buds3-FE-review.1211124.0.html
Read 7 October 2026Backs 2 fields
Reviewwired.com/review/samsung-galaxy-buds3-fe
Read 7 October 2026Backs 1 field
Measurementnotebookcheck.net/Premium-mid-range-headphones-with-bargain-appeal-Samsung-Galaxy-Buds3-FE-review.1211124.0.html
Read 7 October 2026Backs 1 field
Owner's manualmanuals.plus/samsung/sm-r420-galaxy-buds3-fe-wireless-earbuds-manual.pdf
Read 7 October 2026Backs 1 field
Regulatory filingfccid.io/A3LSMR420R
Read 7 October 2026Backs 1 field
Maker product pagesamsung.com/fr/support/warranty
Read 7 October 2026Backs 1 field
Reviewgsmarena.com/samsung_galaxy_buds3_fe_announced_with_spatial_audio_galaxy_ai_and_up_to_30_hours_of_battery_life-news-69092.php
Read 23 October 2026Backs 1 field
Reviewsoundguys.com/samsung-galaxy-buds-3-fe-vs-samsung-galaxy-buds-fe-145735
Read 23 October 2026Backs 1 field

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PredecessorSamsung Galaxy Buds FE