Smartwatches / Compare
Amazfit Active 3 Premium vs Polar Street X
Product A: Amazfit
73 of 150 known
Change Amazfit Active 3 Premium
Product B: Polar
79 of 150 known
Change Polar Street X
63 of 141 fields differ
- 34 different values
- 29 known for one only
- 22 the same
- 56 missing for both
Biggest differences
Each bar uses the scale of all 101 smartwatches.
- Battery life with GPSA: 24hB: 42hPolar is 18 h higher.
- Battery lifeA: 288hB: 240hAmazfit is 48 h higher.
Size, drawn to scale
Front and side.
- AAmazfit: 45 × 45 mm
- BPolar: 45 × 45 mm
Weight
0 to 80 g
Weight (case only)
A38g
B28g
All 150 fields
Every value links to where we found it.


General
7 of 10 differ
Series
Model numbers
W2559GL2N, W2559GL1N, W2559GL3N2Maker product pageus.amazfit.com/products/active-3-premium.jsRead 8 October 2026Public maker product data: Atlas Blue W2559GL2N is the reference. Apex Silver W2559GL1N and Aero White W2559GL3N are sold US colour configurations, not another hardware generation.
6J, 900116713, 900116714, 9001167151Maker product pagepolar.com/en/street-xRead 15 October 2026Store feed SKUs 900116713 (Night Black), 900116714 (Forest Green) and 900116715 (Snow White). The manual and the regulatory sheet give the model 6J.3Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/technical-specifications.htmRead 15 October 2026Model 6J.
GTIN / EAN
850071618952, 850071618945, 8500716189692Maker product pageus.amazfit.com/products/active-3-premium.jsRead 8 October 2026Variant-specific maker barcodes: Atlas Blue 850071618952, Apex Silver 850071618945 and Aero White 850071618969.
725882070766, 725882070773, 7258820707801Maker product pagepolar.com/en/street-xRead 15 October 2026Store feed gtin12: 725882070766 Night Black, 725882070773 Forest Green and 725882070780 Snow White.
Announced
Status
Not available
Predecessor
Not available
Not available
Successor
Not available
Not available
Launch price (US)
Launch price (EU)
Not available
Markets
Colours
Atlas Blue, Apex Silver, Aero White2Maker product pageus.amazfit.com/products/active-3-premium.jsRead 8 October 2026
Night Black, Snow White, Forest Green1Maker product pagepolar.com/en/street-xRead 15 October 2026Colour options: Night Black, Snow White, Forest Green.
Segment
OS updates promised
Not available
Not available
Security updates until
Not available
Not available
Case
5 of 8 differ
Case size
Case shape
Case material
Fibre-reinforced polymer1Maker product pagepolar.com/en/street-xRead 15 October 2026Tech specs: case material and bezel material Bio-based plastic. The launch release says reinforced polymer body. The manual lists PA11+8GF (glass-fibre reinforced polyamide 11) among the device materials. Stored as fibre-reinforced polymer.3Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/technical-specifications.htmRead 15 October 2026Device materials list PA11+8GF, a glass-fibre reinforced polyamide.
Case material (as published)
Back
Not available
Not available
Case dimensions
Height45Width45Thickness11mm(1.8 × 1.8 × 0.4 in)1Maker product pageus.amazfit.com/products/active-3-premiumRead 8 October 2026Technical Specifications > Design: height x width 45 x 45 mm, thickness 11 mm excluding the heart-rate sensor base.
Height45Width45Thickness13.8mm(1.8 × 1.8 × 0.5 in)1Maker product pagepolar.com/en/street-xRead 15 October 2026Tech specs: width 45 mm, height 45 mm, thickness 13.8 mm.
Weight (case only)
Weight with strap
Not available
Durability
3 of 8 differ
Water resistance
5ATM1Maker product pageus.amazfit.com/products/active-3-premiumRead 8 October 20269Owner's manualcdn.multitronic.fi/media/2/b/mmo_140395205_1775822751_1988_183.pdfRead 8 October 2026Basic Parameters gives 5 ATM. Repair and Maintenance explicitly prohibits snorkeling/diving/scuba/high-speed water use despite a named snorkeling activity profile on the marketing page. No dive-capability value is stored.
5ATM1Maker product pagepolar.com/en/street-xRead 15 October 2026Tech specs: water resistance WR50. The manual says 50 m, suitable for swimming.3Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/technical-specifications.htmRead 15 October 2026Water resistance 50 m (suitable for swimming).
Water resistance standard
Dust and water rating
Not available
Not available
Dive rating
Not available
Not available
Max dive depth
Not available
Not available
MIL-STD-810
Not available
MIL-STD-810 tests
Not available
Not available
Operating temperature
Display
6 of 14 differ
Display type
Display type (as published)
Screen size
Resolution
Pixel density
Not available
Display area
Not available
Not available
Touchscreen
Max refresh rate
Not available
Not available
Min refresh rate
Not available
Not available
Peak brightness
Not available
Minimum brightness
Not available
Not available
Always-on display
Display cover
Display cover (as published)
Corning Gorilla Glass 3 (AF + DLC coating)1Maker product pagepolar.com/en/street-xRead 15 October 2026Manual tech spec: Corning Gorilla Glass 3 (AF + DLC coating).3Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/technical-specifications.htmRead 15 October 2026Watch materials: Corning Gorilla Glass 3 (AF + DLC coating), PA11+8GF, aluminum, stainless steel, PMMA. Wristband: silicone with an aluminum buckle.
Platform
7 of 15 differ
Platform
Proprietary4Reviewwareable.com/reviews/amazfit-active-3-premium-review-a-budget-smartwatch-for-beginner-runnersRead 8 October 2026Exact review discusses Zepp software and its own app store, rather than Wear OS/watchOS.5Maker product pageos.zepp.com/compatibility-zepp-os-6Read 8 October 2026Maker currently lists this model as compatible with its own Zepp OS 6 software ecosystem, classified as proprietary.
OS at launch
Not available
Not available
Software
Zepp OS4Reviewwareable.com/reviews/amazfit-active-3-premium-review-a-budget-smartwatch-for-beginner-runnersRead 8 October 2026Zepp software system and app ecosystem.5Maker product pageos.zepp.com/compatibility-zepp-os-6Read 8 October 2026Named maker software family Zepp OS. No launch version or patch number is inferred.
Not available
Works with
Phone requirement
Android 7.0 or later, iOS 15.0 or later. Requires the Zepp app.9Owner's manualcdn.multitronic.fi/media/2/b/mmo_140395205_1775822751_1988_183.pdfRead 8 October 2026Maker Product Manual for A2558/A2559, Basic Parameters and pairing panel: Android 7 or iOS 15+. Preferred over the US product-page iOS 14 claim. A recent app version is required.
iOS 17 or later, or Android 8 or later with Bluetooth 4.0 capability, running the Polar Flow app15Maker product pagesupport.polar.com/ie-en/polar-flow-app-and-compatible-devicesRead 15 October 2026Street X: iOS mobile devices with iOS 17 or later. Android mobile devices with Bluetooth 4.0 capability and Android 8 or later.
Voice assistants
Not available
Chipset
Not available
Not available
Process
Not available
Not available
CPU cores
Not available
Not available
CPU configuration
AAmazfit Active 3 Premium
Not availableBPolar Street X
| Max clock (GHz) |
|---|
| 0.275 |
Max CPU clock
Not available
0.275GHz
GPU
Not available
Not available
Low-power coprocessor
Not available
Not available
Memory
1 of 2 differ
RAM
Not available
Not available
Storage
4GB4Reviewwareable.com/reviews/amazfit-active-3-premium-review-a-budget-smartwatch-for-beginner-runnersRead 8 October 2026Smartwatch features describes available 4 GB storage for local music. Nominal 4 GB is independently published by the maker Taiwan page and the exact Run Testers spec list. Free user space can be lower.7Reviewtheruntesters.com/running-watches/amazfit-active-3-premium-reviewRead 8 October 2026Exact Active 3 Premium key specs explicitly gives Storage 4GB. Its malformed dimensions line is not imported.8Maker product pagetw.amazfit.com/products/active3premiumRead 8 October 2026Official maker listing for Active 3 Premium hardware A2559 publishes nominal 4 GB. No Taiwan NFC, warranty or regulatory value is imported to the US reference.
Health sensors
3 of 8 differ
Heart rate sensor
BioTracker PPG biometric sensor (5 photodiodes and 2 LEDs)1Maker product pageus.amazfit.com/products/active-3-premiumRead 8 October 2026
Polar Precision Prime optical heart rate sensor (OHR GEN 3.5)1Maker product pagepolar.com/en/street-xRead 15 October 2026Tech specs: Precision Prime, OHR GEN 3.5.3Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/technical-specifications.htmRead 15 October 2026Sensors: Precision Prime, Skin Temp GEN 1, OHR GEN 3.5.
ECG capability
Not available
Blood oxygen sensing
Skin temperature sensing
Blood pressure feature
Not available
Not available
Body composition sensor
Not available
Not available
Skin conductance (EDA)
Not available
Not available
Medical clearances
Not available
Not available
Motion and environment sensors
0 of 9 differ
Accelerometer
Accelerometer range
Not available
Not available
Gyroscope
Barometric altimeter
Compass
Ambient light sensor
Depth gauge
Not available
Not available
Depth gauge range
Not available
Not available
Water temperature sensor
Not available
Not available
Health and fitness
2 of 5 differ
Health features
Heart rate alerts, Blood oxygen app, Heart rate variability, Sleep tracking, Sleep stages, Stress tracking, Readiness score, Cycle tracking1Maker product pageus.amazfit.com/products/active-3-premiumRead 8 October 2026High/low heart-rate, low-SpO2 and stress alerts, sleep HRV/stages, BioCharge readiness and menstrual-cycle tracking are explicitly supported. Automatic all-day measurements have configurable intervals. A 5-minute default heart-rate interval in typical-use tests is not continuous per-second sensing, so continuous_heart_rate is not asserted.
Continuous heart rate, Heart rate variability, Sleep tracking, Sleep stages1Maker product pagepolar.com/en/street-xRead 15 October 2026Features: continuous heart rate, nightly sleep stages (Sleep Plus Stages), Nightly Recharge, SleepWise. HRV is listed under heart rate. The Daily Readiness card and SleepWise give an alertness forecast, not a readiness score, so readiness_score is not stored. No stress score is listed. Not a medical device.4Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/introduction.htmRead 15 October 2026Introduction: Sleep Plus Stages, Nightly Recharge, SleepWise, continuous heart rate.
Fitness features
Automatic workout detection, VO2 max, Training load, Recovery advice, Running dynamics, Running power, Pool swim, Open water swim, Strength rep counting, Interval workouts, Route navigation, Turn-by-turn navigation, Trackback1Maker product pageus.amazfit.com/products/active-3-premiumRead 8 October 2026Maker lists automatic recognition of 8 sports and 25 strength movements, interval templates, running power and ground contact time. Pool/open-water swimming are named activity profiles. The snorkeling profile is not stored as a dive capability because the product manual prohibits snorkeling use. VO2 max and recovery advice are independently supported by the exact Wareable review. 170+ sports is not an exact count.4Reviewwareable.com/reviews/amazfit-active-3-premium-review-a-budget-smartwatch-for-beginner-runnersRead 8 October 2026Exact review explicitly names VO2 max, training load, recovery time, pool swims, rep tracking and automatic 25 strength movements. GPS percentage drain is not converted into endurance.
VO2 max, Training load, Recovery advice, Running power, Pool swim, Open water swim, Interval workouts, Route navigation, Turn-by-turn navigation, Trackback, Climb detection1Maker product pagepolar.com/en/street-xRead 15 October 2026Features and cards: Running Performance Test (VO2max), Training Load Pro, Recovery Pro, wrist-based running power, swimming metrics, interval timers and phased training targets, route guidance, turn-by-turn route guidance, Track Back, Back to Start. Hill Splitter detects uphills and downhills automatically (manual). The manual has separate pool and open water swimming sections.4Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/introduction.htmRead 15 October 2026Introduction: Route Guidance, Komoot routes, Track back, Back to start, Running Performance Test with VO2max, Walking test, Training Load Pro, Recovery Pro, running power, swimming metrics with distance and strokes also in open water, Hill Splitter.9Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/swimming-metrics.htmRead 15 October 2026Separate sections for pool swimming (distance, pace, strokes, SWOLF) and open water swimming (distance, pace, stroke rate for freestyle and route).10Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/hill-splitter.htmRead 15 October 2026Hill Splitter automatically detects all uphills and downhills from GPS speed, distance and barometric altitude. It needs a 1 second GPS recording rate. Stored as climb detection.13Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/track-back-and-back-to-start.htmRead 15 October 2026Track back guides you back to the start via the same route you came. Back to start shows the direction by beeline.
Sport profiles
Not available
Not available
Dive modes
Not available
Not available
External sensors
Heart rate strap, Power meter, Speed and cadence1Maker product pageus.amazfit.com/products/active-3-premiumRead 8 October 2026Supports Bluetooth heart-rate belts, running/cycling power meters, speedometers and cadence sensors. No foot-pod or smart-trainer capability is inferred.
Heart rate strap, Power meter, Speed and cadence8Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/compatible-sensors.htmRead 15 October 2026Compatible Bluetooth sensors: Polar Verity Sense, OH1, H10 and H9 heart rate sensors, Polar speed sensor and cadence sensor, and third-party power sensors.
Safety
1 of 6 differ
Fall detection
Not available
Not available
Car crash detection
Not available
Not available
Emergency SOS
Not available
Not available
Emergency siren
Not available
Not available
Live location sharing
Not available
Not available
Dedicated LED flashlight
Not available
Yes1Maker product pagepolar.com/en/street-xRead 15 October 2026Tech specs: front LED light Yes. Built-in LED flashlight with red light mode.11Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/flashlight.htmRead 15 October 2026Integrated LED flashlight with adjustable white light and a red light mode.
Positioning
3 of 3 differ
Positioning
GPS, Galileo, BeiDou, QZSS1Maker product pagepolar.com/en/street-xRead 15 October 2026Tech specs, Geo location: GPS, Galileo, BeiDou and QZSS Yes. GLONASS is not listed.18Maker product pagepolar.com/en/guide/polar-street-x-vs-polar-pacer-proRead 15 October 2026Comparison table: GPS constellations GPS, Galileo, BeiDou, QZSS for Street X. GLONASS is not named.
Dual-band GNSS
No4Reviewwareable.com/reviews/amazfit-active-3-premium-review-a-budget-smartwatch-for-beginner-runnersRead 8 October 2026Exact review explicitly says single-band GPS and lacks dual-band GNSS.7Reviewtheruntesters.com/running-watches/amazfit-active-3-premium-reviewRead 8 October 2026Battery key spec explicitly calls its GPS single-band.
Not available
Offline maps
Connectivity
8 of 15 differ
Bluetooth
Not available
Bluetooth version
Not available
Wi-Fi
Not available
Wi-Fi standard
Not available
Not available
Wi-Fi bands
Not available
Not available
Cellular
Not available
Network
Not available
Not available
4G bands
Not available
Not available
5G bands
Not available
Not available
NFC
Not available
Contactless payments
Not available
Payment services
Not available
Not available
Ultra-wideband
Not available
Not available
Satellite
Not available
Audio
3 of 4 differ
Speaker
Not available
Microphones
Not available
Not available
Calls on the watch
Not available
Music on the watch
Yes1Maker product pageus.amazfit.com/products/active-3-premiumRead 8 October 2026GPS-with-music footnote explicitly describes watch music playback to Bluetooth headphones. Wareable also describes syncing local music. The FAQ restriction on Spotify/Pandora apps does not exclude local files.4Reviewwareable.com/reviews/amazfit-active-3-premium-review-a-budget-smartwatch-for-beginner-runnersRead 8 October 2026Describes syncing personal music to the watch storage. Not simply remote control of phone playback.
Controls
3 of 5 differ
Buttons
Named operating buttons
Up button, Down button, Select button, Power/Back button9Owner's manualcdn.multitronic.fi/media/2/b/mmo_140395205_1775822751_1988_183.pdfRead 8 October 2026About the Watch diagram names Up, Down, Select and Power/Back operating buttons. User Manual Basic operations maps them to upper/lower-left and upper/lower-right positions. Strap releases are not counted.
Crown
Rotating bezel
Not available
Not available
Gestures
Cover the screen to turn it off3Owner's manualsupport.amazfit.com/en/amazfit_active_3_premium/files/user-manual.pdf.pdfRead 8 October 2026Basic operations, printed page 3, explicitly names covering the screen to turn it off.
Not available
Battery and charging
6 of 13 differ
Battery capacity
385mAh1Maker product pagepolar.com/en/street-xRead 15 October 2026Tech specs: battery capacity 385 mAh, Li-Pol.3Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/technical-specifications.htmRead 15 October 2026385 mAh Li-pol rechargeable battery, replaceable at Polar Central Service.
Claimed battery life
AAmazfit Active 3 Premium
| Mode | With solar | Hours (h) |
|---|---|---|
| Smartwatch | No | 288 |
| Heavy use | No | 168 |
| Always-on | No | 96 |
| GPS | No | 24 |
| GPS with music | No | 10 |
| GPS, power saving | No | 76 |
BPolar Street X
| Mode | With solar | Hours (h) |
|---|---|---|
| Smartwatch | No | 240 |
| GPS | No | 42 |
| Max battery GPS | No | 170 |
Source1Maker product pagepolar.com/en/street-xRead 15 October 2026Tech specs: performance training mode 42 h, eco training mode 170 h, smartwatch mode 10 d. The page text and the launch release say 43 h for the performance mode, which conflicts with the 42 h in the tech specs and the manual. The manual figure is stored.3Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/technical-specifications.htmRead 15 October 2026Performance training mode up to 42 h (optical heart rate on, GPS recording every second). Eco training mode up to 170 h (GPS every 2 minutes, optical heart rate off). Smartwatch mode up to 10 days with continuous heart rate and phone notifications on. 10 days is 240 h.14Maker product pagesupport.polar.com/en/what-is-the-battery-life-of-street-xRead 15 October 2026Performance up to 42 h: optical heart rate on, GPS every 1 second, always-on display off. The scenario text says Dual-Frequency GPS ON, while the product page never claims dual-frequency GNSS and the5krunner says single-frequency, so the row is stored as plain GPS. Eco up to 170 h: optical heart rate off, single-frequency GPS every 2 minutes. Smartwatch up to 10 days with phone notifications on, always-on display off and Do Not Disturb 8 h at night. Stored eco row as the maximum-saving GPS mode, like the Vantage V3 file.
Smartwatch mode (claimed)
288h
240h
AOD battery life (up to)
96h
Not available
GPS mode (claimed)
24h
42h
Solar charging
Not available
Not available
Charging method
Charging guidance
Not available
Charge with the included Polar Charge 2.0 cable, which snaps on magnetically. A USB power adapter is not included. Polar asks for an adapter marked output 5 Vdc that provides at least 500 mA and has an approval mark such as LPS, UL listed or CE. The watch can charge during training. An optional charge limit of 80% is in the battery settings.6Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/batteries.htmRead 15 October 2026Charging the battery: custom cable snaps in magnetically. A USB power adapter is not included. Adapter marked output 5 Vdc, at least 500 mA, LPS, UL listed or CE. Charging during training is possible. Charge limit 80% in Settings > General settings > Battery.
Max charging power (watch)
Not available
Not available
Fast charging
Not available
Not available
Quick charge claim
Not available
Not available
Charge 0 to 80% (claimed)
Not available
Not available
Full charge time (claimed)
Not available
Not available
Measured
None of 4 known
Peak brightness (measured)
Not available
Not available
Battery life (measured)
Not available
Not available
Battery tests (measured)
Not available
Not available
Full charge time (measured)
Not available
Not available
Strap
3 of 6 differ
Lug width
Quick-release strap
Strap system
Standard 22 mm spring bars with a quick-release knob. No adapters needed7Owner's manualsupport.polar.com/e_manuals/street-x/polar-street-x-user-manual-english/changeable-wristband.htmRead 15 October 2026Standard 22 mm spring bars. Any band that uses 22 mm spring bars fits.
Strap material
Strap
Not available
POLAR Street Wristband, 22mm1Maker product pagepolar.com/en/street-xRead 15 October 2026What's included: POLAR Street Wristband, 22mm.
Strap sizes
Not available
Not available
Regulatory
0 of 3 differ
FCC ID
Not available
SAR limb (US)
Not available
Not available
SAR limb (EU)
Not available
Not available
Other certifications
Not available
Not available
In the box
1 of 2 differ
In the box
Smartwatch with standard strap, Magnetic charging head without cable, Instruction manual1Maker product pageus.amazfit.com/products/active-3-premiumRead 8 October 2026Complete Packing List. The USB-C cable is not included with the magnetic head.
POLAR Street X, POLAR Street Wristband, 22mm, Polar Charge 2.01Maker product pagepolar.com/en/street-xRead 15 October 2026What's included: POLAR Street X, POLAR Street Wristband 22 mm, Polar Charge 2.0.
Power adapter in box
Links
Not compared
Product page
Spec sheet
Manual
EPREL registration number
Not available
Not available
Warranty
1 of 1 differ
Manufacturer warranty (source market)
Both are also in the API. Back to all smartwatches.











