Amazfit GTR 3 Pro vs Amazfit Helio Strap
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At a glance
Key specifications and important differences. Full details follow below.
| Feature |  Amazfit GTR 3 Pro |  Amazfit Helio Strap |
|---|---|---|
| Price | KSh 20,000.00 | KSh 22,000.00 |
| Display | 1.45-inch AMOLED touchscreen | — |
| Battery capacity | 450 mAh typical | 232 mAh rated |
| Water resistance | 5 ATM | 5 ATM; suitable for splashes, showering and shallow-water swimming, not diving or high-pressure water activities |
| Operating system | Zepp OS | — |
| Positioning / GNSS | GPS, GLONASS, Galileo, BeiDou and QZSS | — |
| Health & wellness features | Heart rate, blood oxygen, stress, breathing rate, PAI and one-tap health measurement; wellness readings are not intended for medical diagnosis | 24-hour heart rate, blood oxygen, stress, BioCharge energy level, PAI and heart-rate recovery; wellness measurements are not intended for medical diagnosis |
Full specifications
2 of 4 products
| Specification | Amazfit GTR 3 Pro | Amazfit Helio Strap |
|---|---|---|
| Identity & design | ||
| Brand | Amazfit | Amazfit |
| Model | GTR 3 Pro | Helio Strap (A2445) |
| Dimensions | 46 × 46 × 10.7 mm | 33.97 × 24.3 × 10.59 mm (heart-rate sensor base excluded) |
| Weight | 32 g without strap | 20 g |
| Build materials | Aircraft-grade aluminum-alloy body with curved glass | Fiber-reinforced polymer sensor body |
| Wrist size | 155–218 mm | 145–205 mm |
| Strap / band | 22 mm quick-release leather or fluoroelastomer strap with classic pin buckle | 22 mm nylon strap with hook-and-loop fastening |
| Controls / buttons | Two physical buttons including a rotating navigation crown, plus touchscreen | Screen-free smart band with indicator lights; controls and data are managed through the Zepp app |
| Display | ||
| Display | 1.45-inch AMOLED touchscreen | — |
| Screen resolution | 480 × 480 pixels, 331 ppi | — |
| Display protection | Tempered glass with anti-fingerprint coating | — |
| Display features | Always-on display and more than 150 watch faces | — |
| Performance & software | ||
| Operating system | Zepp OS | — |
| Connectivity | ||
| Wi-Fi | 2.4 GHz Wi-Fi | — |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.2 BLE |
| Positioning / GNSS | GPS, GLONASS, Galileo, BeiDou and QZSS | — |
| Audio & communication | ||
| Speaker | Built-in speaker | — |
| Microphone | Built-in microphone | — |
| Calling | Bluetooth calling when paired with a compatible phone | — |
| Sensors, health & fitness | ||
| Sensors | BioTracker 3.0 PPG sensor, accelerometer, gyroscope, geomagnetic sensor, barometric altimeter, ambient-light sensor and temperature sensor | BioTracker 6.0 PPG biometric sensor (5PD + 2LED), accelerometer, gyroscope and temperature sensor |
| Health & wellness features | Heart rate, blood oxygen, stress, breathing rate, PAI and one-tap health measurement; wellness readings are not intended for medical diagnosis | 24-hour heart rate, blood oxygen, stress, BioCharge energy level, PAI and heart-rate recovery; wellness measurements are not intended for medical diagnosis |
| Sleep tracking | Sleep stages, sleep breathing quality and naps | Sleep stages including REM, naps, sleep schedule, sleep HRV, breathing quality and sleep score |
| Sports / workout modes | More than 150 sports modes with automatic recognition of eight sports | 50+ sports modes, including smart strength training and official HYROX Race mode |
| Training & outdoor features | PeakBeats workout analysis, route tracking and built-in five-system positioning | — |
| Battery & durability | ||
| Battery capacity | 450 mAh typical | 232 mAh rated |
| Battery life | Up to 12 days typical use, 30 days battery saver, 6 days heavy use or 35 hours continuous GPS | Up to 10 days typical use |
| Charging | Magnetic charging base; approximately 2 hours | Magnetic charging head; less than 2 hours; USB-C cable is not included |
| Water resistance | 5 ATM | 5 ATM; suitable for splashes, showering and shallow-water swimming, not diving or high-pressure water activities |
| Compatibility | ||
| Phone compatibility | Android 7.0 or later; iOS 12.0 or later | Android 7.0 or later; iOS 15.0 or later |
| Companion app | Zepp app | Zepp app; supports synchronization with Strava, TrainingPeaks, adidas Running, komoot, Relive, Google Fit and Apple Health where available |
| Colors | Brown Leather or Infinite Black | Black |
| Additional specifications | ||
| Vibration motor | — | Rotor motor |
| Charging time | — | Less than 2 hours from empty |
| Smart recognition | — | Recognizes 25 strength-training movements |
| Offline data storage | — | Stores up to 21 days of offline heart-rate data |
| Real-time heart-rate broadcast | — | Supported; heart rate can be synchronized to compatible third-party smartwatches |
| Workout status | — | PeakBeats training-status system |
| Energy, load and readiness features | — | BioCharge energy-level tracking |
| Other health features | — | PAI health assessment and heart-rate recovery |
| Third-party fitness apps | — | Strava, TrainingPeaks, adidas Running, Runna, komoot, Relive, Google Fit and Apple Health; availability varies by region and platform |
| Packing list | — | Smart band and strap assembled, magnetic charging head without cable, and instruction manual |
| Packaging materials | — | Made with 100% recyclable materials |
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