Amazfit Helio Strap vs Amazfit GTS 4
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At a glance
Key specifications and important differences. Full details follow below.
| Feature |  Amazfit Helio Strap |  Amazfit GTS 4 |
|---|---|---|
| Price | KSh 22,000.00 | KSh 18,500.00 |
| Display | — | 1.75-inch AMOLED |
| Battery capacity | 232 mAh rated | 300 mAh rated |
| Water resistance | 5 ATM; suitable for splashes, showering and shallow-water swimming, not diving or high-pressure water activities | 5 ATM |
| Processor | — | Not listed |
| RAM | — | Not listed |
| Storage | — | Not listed |
| Operating system | — | Zepp OS 2.0 |
| Network / cellular | — | No cellular connection |
| Positioning / GNSS | — | Dual-band, circularly polarized GNSS supporting six satellite systems |
| Health & wellness features | 24-hour heart rate, blood oxygen, stress, BioCharge energy level, PAI and heart-rate recovery; wellness measurements are not intended for medical diagnosis | 24-hour heart rate, blood oxygen and stress; one-tap measurement; readings are not medical diagnoses |
Full specifications
2 of 4 products
| Specification | Amazfit Helio Strap | Amazfit GTS 4 |
|---|---|---|
| Identity & design | ||
| Brand | Amazfit | Amazfit |
| Model | Helio Strap (A2445) | GTS 4 |
| Announced | — | September 2022 |
| Dimensions | 33.97 × 24.3 × 10.59 mm (heart-rate sensor base excluded) | 42.7 × 36.5 × 9.9 mm without heart-rate sensor base |
| Weight | 20 g | 27 g without strap |
| Build materials | Fiber-reinforced polymer sensor body | Aluminum-alloy middle frame; high-gloss sprayed polycarbonate bottom shell |
| Wrist size | 145–205 mm | 140–200 mm |
| Strap / band | 22 mm nylon strap with hook-and-loop fastening | 20 mm quick-release fluoroelastomer or nylon strap |
| Controls / buttons | Screen-free smart band with indicator lights; controls and data are managed through the Zepp app | Touchscreen and stainless-steel navigation crown |
| Display | ||
| Display | — | 1.75-inch AMOLED |
| Screen resolution | — | 390 × 450 pixels, 341 ppi |
| Display protection | — | Tempered glass with anti-fingerprint coating |
| Display features | — | Always-on display; 150+ watch faces |
| Performance & software | ||
| Processor | — | Not listed |
| CPU | — | Not listed |
| GPU | — | Not listed |
| RAM | — | Not listed |
| Storage | — | Not listed |
| Operating system | — | Zepp OS 2.0 |
| Connectivity | ||
| Network / cellular | — | No cellular connection |
| SIM / eSIM | — | No SIM or eSIM |
| Wi-Fi | — | 2.4 GHz Wi‑Fi |
| Bluetooth | Bluetooth 5.2 BLE | Bluetooth 5.0 and BLE |
| NFC | — | NFC not listed |
| Positioning / GNSS | — | Dual-band, circularly polarized GNSS supporting six satellite systems |
| Ultra Wideband (UWB) | — | Not listed |
| Satellite features | — | Not listed |
| Audio & communication | ||
| Speaker | — | Built-in speaker |
| Microphone | — | Built-in microphone |
| Calling | — | Bluetooth calling when paired |
| Sensors, health & fitness | ||
| Sensors | BioTracker 6.0 PPG biometric sensor (5PD + 2LED), accelerometer, gyroscope and temperature sensor | BioTracker 4.0 PPG, accelerometer, gyroscope, geomagnetic, barometric altimeter and ambient-light sensor |
| Health & wellness features | 24-hour heart rate, blood oxygen, stress, BioCharge energy level, PAI and heart-rate recovery; wellness measurements are not intended for medical diagnosis | 24-hour heart rate, blood oxygen and stress; one-tap measurement; readings are not medical diagnoses |
| Sleep tracking | Sleep stages including REM, naps, sleep schedule, sleep HRV, breathing quality and sleep score | Sleep stages including REM, naps, breathing quality and sleep score |
| Sports / workout modes | 50+ sports modes, including smart strength training and official HYROX Race mode | 154 modes; automatic recognition of eight sports and strength exercises |
| Training & outdoor features | — | Route import, real-time navigation, track-run mode and PeakBeats training status |
| Safety & emergency features | — | Not listed |
| Diving / depth features | — | Not rated for diving |
| Battery & durability | ||
| Battery capacity | 232 mAh rated | 300 mAh rated |
| Battery life | Up to 10 days typical use | Up to 8 days typical, 4 days heavy, 16 days saver; GPS up to 16/28/33 hours by mode |
| Charging | Magnetic charging head; less than 2 hours; USB-C cable is not included | Magnetic charging, approximately 2 hours |
| Water resistance | 5 ATM; suitable for splashes, showering and shallow-water swimming, not diving or high-pressure water activities | 5 ATM |
| Durability / certifications | — | ISO 22810:2010 5 ATM; suitable for swimming, not hot showers or sauna |
| Compatibility | ||
| Phone compatibility | Android 7.0 or later; iOS 15.0 or later | Android 7.0+ or iOS 12.0+ |
| Companion app | Zepp app; supports synchronization with Strava, TrainingPeaks, adidas Running, komoot, Relive, Google Fit and Apple Health where available | Zepp app |
| Colors | Black | Infinite Black, Misty White, Autumn Brown, Rosebud Pink |
| 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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