Garmin Enduro 4 (51 mm): 010-04799-00 · titanium bezel / dark olive ComfortFit fabric band
Amazfit T-Rex Ultra 2: A2550 · 51 mm · Black Magma · silicone strap
| Specification | Garmin Enduro 4 (51 mm) | Amazfit T-Rex Ultra 2 |
|---|---|---|
| Release year | 2026 | 2026 |
| Announcement and sales | Announced 6 October 2026; Garmin's press release states it is available now Garmin | — |
| Model code | 010-04799-00; 51 mm with dark olive ComfortFit fabric band Garmin | — |
| Display | 1.4-inch (35.56 mm) colour, sunlight-visible transflective MIP; 280 x 280 pixels; touchscreen Garmin | 1.5-inch AMOLED · 480 × 480 · sapphire glass Amazfit |
| Lens | Power Sapphire (solar-charging sapphire lens) Garmin | — |
| Case and bezel | Fibre-reinforced polymer case; titanium bezel; 51 x 51 x 15.7 mm Garmin | — |
| Weight | 66 g; case only 57 g Garmin | — |
| Band | ComfortFit fabric band; QuickFit compatible (26 mm); ComfortFit Medium fits 145-220 mm wrists Garmin | — |
| Storage | 64 GB for music, maps and data Garmin | 64 GB total; up to 26.7 GB user space Amazfit |
| Memory | 50% more RAM than Enduro 3 (Garmin claim) Garmin | — |
| Positioning | GPS, GLONASS, Galileo, QZSS, BeiDou; multi-band GPS; SatIQ automatic satellite mode selection Garmin | Dual-band GNSS; six satellite systems Amazfit |
| Sensors | Elevate wrist heart rate, Pulse Ox, barometric altimeter, compass, gyroscope, accelerometer, thermometer, ambient light sensor; skin temperature Garmin | BioTracker 6.0 PPG; barometer, compass, motion and temperature sensors Amazfit |
| ECG | Garmin ECG app; available only in selected regions and for adults aged 22 and over Garmin | — |
| Flashlight | LED flashlight with white and red light Garmin | — |
| Battery type | Built-in rechargeable lithium-ion battery Garmin | — |
| Battery: smartwatch | Up to 36 days in smartwatch mode; 90 days with solar. Low-power watch mode 92 days; unlimited with solar. Expedition mode 77 days Garmin | — |
| Battery: activity | Normal/Balanced 80 hours (144 with solar); Max Accuracy 60 (90); Extended 120 (320); Max Battery 210 hours (unlimited with solar); with music 22 hours (25) Garmin | — |
| Solar charging assumptions | Garmin's figures assume 3 hours per day outdoors at 50,000 lux in smartwatch mode and continuous 50,000 lux in activity modes Garmin | — |
| Charging | Garmin proprietary charging cable; USB-C computer port or an adapter rated at least 5 W Garmin | Magnetic charging puck; USB-C cable separate Amazfit |
| Water resistance | 10 ATM; withstands pressure equivalent to 100 m depth Garmin | — |
| Connectivity | Bluetooth, ANT+, Wi-Fi; pairs with iPhone and Android Garmin | — |
| Payments and music | Garmin Pay contactless payments; offline music from Spotify, Deezer and Amazon Music (subscription may be required) Garmin | — |
| Maps | Preloaded multicontinent TopoActive maps; on-watch routing, NextFork, perspective view Garmin | — |
| Training and activities | 100+ activity profiles; grade-adjusted pace targets, stamina zones and curve, Garmin Epic multiday logging Garmin | — |
| Power modes | Power modes selectable during an activity: Max Accuracy, Balanced, Extended, Max Battery Garmin | — |
| Operating temperature | -20 to 45 °C operating and storage; charging 0 to 45 °C Garmin | — |
| Radio | 2400-2483.5 MHz (< 19 dBm) and 13.56 MHz; M/N A04413 Garmin | — |
| In the box | Enduro 4 with dark olive ComfortFit fabric band; charging/data cable; documentation Garmin | — |
| Announcement / availability | — | 19 February 2026 Amazfit |
| Peak brightness | — | Up to 3000 nits Amazfit |
| Body | — | Polymer case; Grade 5 titanium bezel, buttons and back Amazfit |
| Size / weight | — | 51 × 51 × 14.3 mm; 89.2 g with strap Amazfit |
| Strap | — | 26 mm silicone; 145–215 mm wrist Amazfit |
| Battery | — | 870 mAh; up to 30 typical / 15 heavy / 10 AOD days Amazfit |
| GPS battery modes | — | Up to 50 Accurate / 90 saving / 177 max-battery hours Amazfit |
| Wireless | — | Bluetooth 5.2 BLE; 2.4 GHz Wi-Fi Amazfit |
| Water / diving | — | 10 ATM; recreational diving up to 45 m Amazfit |
| Phone connection | — | Android 7+ / iOS 15+; Zepp app Amazfit |
| Calls | — | Bluetooth calls using microphone/speaker Amazfit |