Amazfit Active Max vs Amazfit T-Rex Ultra 2
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At a glance
Key specifications and important differences. Full details follow below.
| Feature |  Amazfit Active Max |  Amazfit T-Rex Ultra 2 |
|---|---|---|
| Price | KSh 24,000.00 | KSh 85,000.00 |
| Display | 1.5-inch AMOLED touchscreen | 1.5-inch AMOLED |
| Battery capacity | 658 mAh rated | 870 mAh rated |
| Water resistance | 5 ATM | 10 ATM; tested to ISO 22810:2010 |
| Storage | 4 GB | 64 GB total; 26.7 GB available |
| Operating system | Zepp OS 6 | — |
| Positioning / GNSS | Built-in five-satellite positioning | Built-in dual-band positioning; six satellite positioning systems; circularly polarised GPS antenna |
| Health & wellness features | Heart rate, blood oxygen, stress, BioCharge, LifeLoad and one-tap health measurement; wellness readings are not intended for medical diagnosis | 24-hour heart-rate, blood-oxygen, stress and skin-temperature monitoring; one-tap measurement; HybridCharge, BioCharge and LifeLoad energy insights; VO₂ Max and health alerts |
Full specifications
2 of 4 products
| Specification | Amazfit Active Max | Amazfit T-Rex Ultra 2 |
|---|---|---|
| Identity & design | ||
| Brand | Amazfit | Amazfit |
| Model | Active Max | Amazfit T-Rex Ultra 2 |
| Announced | December 2025 | — |
| Dimensions | 48.5 × 48.5 × 12.2 mm without heart-rate sensor base | 51 × 51 × 14.3 mm, excluding heart-rate sensor base |
| Weight | 39.5 g without strap | 89.2 g with strap |
| Build materials | Aluminum-alloy frame and polymer case with strengthened glass | Fibre-reinforced polymer case; Grade 5 titanium bezel, buttons and back panel |
| Wrist size | — | 145–215 mm |
| Strap / band | 22 mm silicone strap with classic pin buckle | 26 mm silicone strap with classic pin buckle |
| Controls / buttons | Two physical buttons and touchscreen | Four physical buttons; sapphire-glass touchscreen |
| Display | ||
| Display | 1.5-inch AMOLED touchscreen | 1.5-inch AMOLED |
| Screen resolution | 480 × 480 pixels, 323 ppi | 480 × 480 pixels, 322 ppi |
| Display protection | Strengthened glass with anti-fingerprint coating | Sapphire glass |
| Display features | Always-on display; up to 3,000 nits peak brightness | Up to 3,000 nits peak brightness; Always-On Display |
| Performance & software | ||
| Storage | 4 GB | 64 GB total; 26.7 GB available |
| Operating system | Zepp OS 6 | — |
| Connectivity | ||
| Wi-Fi | No Wi-Fi support listed | 2.4 GHz Wi-Fi (802.11 b/g/n) |
| Bluetooth | Bluetooth 5.3 BLE | Bluetooth 5.2 and BLE |
| Positioning / GNSS | Built-in five-satellite positioning | Built-in dual-band positioning; six satellite positioning systems; circularly polarised GPS antenna |
| Audio & communication | ||
| Speaker | Built-in speaker | Supported |
| Microphone | Built-in microphone | Supported |
| Calling | Bluetooth calling and Android message replies when paired | Bluetooth calling and call/text notifications through a connected smartphone |
| Sensors, health & fitness | ||
| Sensors | BioTracker PPG sensor, accelerometer, gyroscope, geomagnetic sensor, barometric altimeter, ambient-light sensor and temperature sensor | BioTracker 6.0 PPG biometric sensor (5 photodiodes + 2 LEDs); accelerometer; gyroscope; geomagnetic sensor; barometric altimeter; ambient-light sensor; temperature sensor |
| Health & wellness features | Heart rate, blood oxygen, stress, BioCharge, LifeLoad and one-tap health measurement; wellness readings are not intended for medical diagnosis | 24-hour heart-rate, blood-oxygen, stress and skin-temperature monitoring; one-tap measurement; HybridCharge, BioCharge and LifeLoad energy insights; VO₂ Max and health alerts |
| Sleep tracking | RestoreIQ sleep quality, stages, breathing patterns and naps | Sleep HRV; sleep quality; stages including REM; daytime naps; sleep schedule; breathing quality; sleep score; RestoreIQ recovery insights |
| Sports / workout modes | More than 170 sports modes with smart strength-training recognition | 187 sports modes; smart recognition of 25 strength-training movements and 8 sports movements; HYROX race and training modes |
| Training & outdoor features | Zepp Coach, PeakBeats, offline maps, route navigation, virtual pacer and compatible workout peripherals | Zepp Coach; PeakBeats; lactate threshold, Training Stress Balance, Training Load and Training Effect; offline maps; on-watch route planning, automatic rerouting, POI search, turn-by-turn navigation; golf maps; external heart-rate, running-power and cycling sensors |
| Safety & emergency features | — | Two-colour flashlight with SOS/Boost modes; storm, high-altitude blood-oxygen and route-deviation alerts |
| Diving / depth features | Not rated for diving; water resistance is 5 ATM | Freediving and recreational scuba-diving support to 45 m; EN13319:2000, ISO 6425:2018 and GB/T 18828-2022 diving certifications; Bühlmann ZHL-16C decompression model |
| Battery & durability | ||
| Battery capacity | 658 mAh rated | 870 mAh rated |
| Battery life | Up to 25 days typical use, 13 days heavy use, 10 days always-on display or 64 hours continuous GPS | Typical use: up to 30 days; heavy use: 15 days; AOD: 10 days; accurate GPS: 50 h; power-saving GPS: 90 h; maximum GPS: 177 h; low-temperature mode with GPS: 40 h |
| Charging | Magnetic charging head | Magnetic charging head; DC 5 V 1.5 A maximum input |
| Water resistance | 5 ATM | 10 ATM; tested to ISO 22810:2010 |
| Durability / certifications | — | MIL-STD-810H-2019; low-temperature operation down to −30 °C; SGS water-resistance test; certified diving standards |
| Compatibility | ||
| Phone compatibility | Android 7.0 or later; iOS 14.0 or later | Android 7.0 or later; iOS 15.0 or later |
| Companion app | Zepp app | Zepp App |
| Colors | Black | Black Magma |
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