| General | |
|---|---|
| Manufacturer | Amazfit (Zepp Health) |
| Type | Premium solar-powered expedition GPS smartwatch |
| Series | T-Rex |
| Released | 22 September 2026 (pre-order from 22 September 2026) |
| Price at launch | GBP 649.90 / USD 649.99 |
| Predecessor | New solar model in the T-Rex series; closest sibling is the T-Rex Ultra 2 |
| Successor | Not yet announced. See Release Radar. |
| Sizes | 51.4mm (large). 1.32 inch display. |
| Colours | Basalt Black |
Specifications and features as at launch.
Jump to: Expert opinion | What’s new | Specifications | Battery life | Features | Activity profiles | Comparisons | Quick answers | Further reading
Expert opinion
The T-Rex Dual Solar is the first AMOLED sports watch with solar charging, and adds it with a front and rear charging system. A panel in the display harvests light while the watch is worn, and a larger glass-ceramic panel in the caseback, with more than twice the active area, charges roughly twice as fast when the watch is removed and angled at the sun during breaks. Amazfit positions it as a long-expedition tool for hiking, climbing and multi-day adventures where mains power is limited, pairing the solar system with a 3,000-nit sapphire display, a Grade 5 titanium bezel, six-satellite dual-frequency positioning and the brand’s extensive range of sports and adventure features. At the time of writing, the watch has not been tested on this site for accuracy or feature reliability.
Amazfit T-Rex Dual Solar
Solar expedition GPS smartwatch
What’s new
Hardware
- Dual-sided solar charging, the first used in an AMOLED smartwatch: a front display panel plus a glass-ceramic caseback panel with more than twice the active charging area
- Included woven lanyard for attaching the watch to a pack so the rear panel keeps harvesting light off the wrist
- Glass-ceramic and titanium-alloy caseback
- Grade 5 titanium bezel and four titanium buttons
- 1.32 inch AMOLED at 3,000 nits under sapphire crystal
- Operating range down to -30°C, military-standard durability, 10 ATM with recreational diving to 50 metres
- White and red multi-mode flashlight
Software
- Outdoor Exploration Mode, optimising GPS power draw for long and multi-day activities
- HybridCharge intelligent solar-charging management
- Map rendering 2.5 times faster and refresh rate up 12-fold, with smoother rotation
- Hybrid Training with Training Balance and Weekly Focus
- Biometric Anomaly Detector for physical strain, and a Battery Assistant that estimates remaining life
- 180-plus sports modes including HYROX training
Specifications
| Display | |
|---|---|
| Size | 1.32 inch |
| Type | AMOLED |
| Resolution | 466 x 466 pixels |
| PPI | 353 |
| Peak brightness | 3,000 nits |
| Lens | Sapphire crystal |
| Touchscreen | Yes |
| Physical | |
| Case size | 51.4mm (large) |
| Thickness | 16.9mm (including heart-rate sensor) |
| Weight | 69g (without strap) |
| Case material | Grade 5 titanium bezel and buttons, glass-ceramic and titanium-alloy caseback |
| Water rating | 10 ATM, recreational diving to 50m |
| Durability | Military-standard certification, operating -30°C to +70°C |
| Strap | Included woven lanyard for pack attachment. 26mm quick release. |
| © the5krunner. Link required. | |
| Sensors and positioning | |
| GPS | Dual-band, six satellite systems, circularly-polarised antenna |
| Heart rate | BioTracker 6.0 PPG |
| Other sensors | Blood-oxygen, barometric altimeter, compass, temperature, gyroscope, accelerometer |
| Connectivity and storage | |
| Connectivity | Wi-Fi, Bluetooth, NFC contactless payments (European version) |
| Storage | 64 GB |
| Music | Onboard MP3 storage and offline podcasts, playback via Bluetooth |
Battery life
Solar charging slows power consumption to extend battery life. It does not replace USB charging, is limited by temperature, and stops once the battery is nearly full. The day figures below assume three hours a day at 50,000 lux, roughly moderately sunny with light cloud. The GPS and trail-running hour figures, and the 180-day and 424-day figures, assume continuous replenishment at 50,000 lux.
| Mode | Base | With front solar | With rear solar |
|---|---|---|---|
| Typical use | Up to 25 days | Up to 34 days | Up to 51 days |
| Heavy use | Up to 13 days | Up to 15 days | Up to 18 days |
| Clock mode | Up to 15 days | Up to 92 days | Up to 424 days |
| Accuracy GPS | Up to 41 hours | Up to 47 hours | – |
| Outdoor Extreme Mode | Up to 40 days | Up to 47 days | Up to 180 days |
| Trail running, Extreme mode | Up to 33 hours | Up to 37 hours | – |
| Trail running, Normal mode | Up to 48 hours | Up to 57 hours | – |
| © the5krunner. Link required. | |||
The headline figures are demonstrations of the solar system rather than everyday endurance. The 180-day figure is Outdoor Extreme Mode with continuous rear-panel replenishment; Clock mode reaches up to 424 days on the rear panel but records only steps and basic sleep with heart rate, Bluetooth and other functions off.
Features
The T-Rex Dual Solar runs on the Zepp ecosystem. Its feature set spans planning, preparation, performance and everyday connectivity.
Plan
- Preloaded full-colour maps, with downloadable contour-line and ski map layers
- Intelligent route planning with waypoints
- Offline route planning on the watch and in the app
- Rerouting by original route or straight-line return
- Colour-coded elevation profile and points-of-interest search
- Hybrid Training plans via Zepp Coach and third-party platforms
- Training Balance and Weekly Focus planning tools
Prepare
- Hybrid Training with structured plans and recovery guidance
- Fatigue, fitness and recovery analysis in the Zepp app
- Lactate threshold and equivalent pace
- Biometric Anomaly Detector for physical strain
- Battery Assistant estimating remaining battery life
Perform
- 180-plus sports modes, including hiking, mountaineering, recreational diving, golf and HYROX training
- Recreational diving to 50 metres
- Advanced strength training
- GRun arrival-time estimation
- Blood-oxygen monitoring for high-altitude use
- Flashlight with white and red modes, 200-lux beam, 300-lux Boost and an SOS mode
- Live activity sharing
- Environment tools: compass, weather-change and fast-ascent alerts
Connect
- Bluetooth calls
- Zepp Flow voice control
- NFC contactless payments (supported regions)
- Offline podcast storage and MP3 music
- Sync with partner training platforms
- Smart notifications
Activity profiles
The T-Rex Dual Solar supports more than 180 sports modes. The confirmed headline modes are hiking, mountaineering, recreational diving, golf and HYROX. Amazfit lists more than 180 sport modes in total.
Amazfit T-Rex Dual Solar
Solar expedition GPS smartwatch
Comparisons and upgrade guides
- Amazfit T-Rex Dual Solar vs Garmin Fenix 9 Pro Solar, two approaches to solar
- Amazfit T-Rex Dual Solar vs Garmin Instinct 3 Solar, AMOLED with solar against a solar-first watch
Quick answers
When was the Amazfit T-Rex Dual Solar released?
Amazfit released the T-Rex Dual Solar on 22 September 2026, with pre-orders from the same day. The launch price was GBP 649.90 or USD 649.99.
Is the T-Rex Dual Solar waterproof?
T-Rex Dual Solar has a water rating of 10 ATM and supports recreational diving to 50m.
Does the T-Rex Dual Solar have maps?
Yes, T-Rex Dual Solar has preloaded full-colour maps, with downloadable contour-line and ski map layers. It supports offline route planning on the watch and rerouting by the original route or a straight-line return.
How does the T-Rex Dual Solar solar charging work?
T-Rex Dual Solar has a solar panel in the display and a larger glass-ceramic panel in the caseback, with more than twice the active area. Amazfit rates typical use at up to 25 days, rising to 34 days with front solar and 51 days with rear solar, at three hours a day of 50,000 lux.
Does the T-Rex Dual Solar have a flashlight?
Yes, T-Rex Dual Solar has a flashlight with white and red modes, a 200-lux beam, a 300-lux Boost and an SOS mode.
What size and weight is the T-Rex Dual Solar?
T-Rex Dual Solar has a 51.4mm case, is 16.9mm thick including the heart rate sensor and weighs 69g without the strap. It takes a 26mm quick-release strap and has a 1.32 inch AMOLED display.
Further reading
- the5krunner T-Rex Dual Solar launch coverage
- Amazfit watch specifications
- HYROX sports technology guide
- Release Radar: upcoming watches
Small things I always use
- Garmin 90-degree charging adapter: Charges your Garmin from any USB-C cable. Essential when travelling. I use one.
- Body Glide: The blue anti-chafe stick swimmers and runners carry. I use it.
- Speedo earplugs: Fewer ear infections and no cold-water dizziness. I use them.
- Dryrobe Advance: My winter changing robe for open-water swims. I use one. A cheaper option is the AONYIYI changing robe.
- Maurten: Race fuel that stays easy on the stomach. I use them.
- Beet It Sport nitrate shots: Beetroot shots I take in the days before a race. I use them.
- Garmin charging puck: The quickest way to top up before a session. I use one.
- Injinji: Toe socks that stop rubbing, so you run more. I use them.
- Ultimate toe protectors: Stop black toenails on long runs. They work. I use them.
- Compressport R2 v2 calf sleeves: My calf sleeves of choice. I use them.
- Cellucor C4: My pre-workout before hard sessions.
- TPU tubes: Schwalbe Aerothan, Tubolito and Pirelli SmarTube. Light, tiny spares. I use all three.
- G8 insoles: Adjustable insoles that are good. I use them.
- Cycplus Cube: A 97g electric pump that gets a road tyre rideable in two minutes. I carry one. 5% off with code THE5KRUNNER.
Watches and sensors
- Polar H10: My daily driver for waking HRV.
- Polar Verity Sense: My backup arm-worn HR sensor.
- Nomad bedside charger: Charges my iPhone and Apple Watch overnight. I use it, and many of their bands.
- Train.Red: The best muscle oxygen sensor I’ve used.
- Tymewear: Accurate heart rate and reliable ventilatory zones. I use it to pace endurance rides over an hour.
- Garmin Forerunner 970: A pro-grade triathlon watch. I use this.
- Apple Watch Ultra 4: My daily smartwatch. No phone needed on rides.
- Garmin Fenix 9 Pro: I’ve just bought one.
On the bike
- Continental GP5000 for everyday riding, and Aero 111 on the front for special occasions.
- Helmets: Specialized S-Works Evade 3 for road riding, and Rudy Project Wing for TT-style races. I use both.
- Ravemen FR300: A front light that mounts under your Garmin or Wahoo. I use one.
- Ravemen FR1000: The light and the computer mount in one unit, so nothing else goes on the bars. Better than mine.
- Ravemen FR1500SE: 1,500 lumens hanging under your Garmin, for proper night rides.
- Ravemen FR1100SE: 1,100 lumens under your Garmin, and up to 46 hours on slow flash.
- Ravemen FR500: A brighter FR300 with the same mount.
- Wahoo TRACKR Radar: I use it on one bike and Varia on the other. They perform the same.
- Garmin Varia RTL515: Radar that warns you of cars from behind. I use this model.
- Wahoo ELEMNT Roam 3: The bike computer that’s easy to use. I use mine on most rides.
- Favero Assioma Pro RS2: Accurate power pedals that swap easily between bikes. I use this model.
Home and indoor training
- NPE Runn: Makes my basic treadmill smart, sending more accurate speed and distance to my watch and Zwift. I use it.
- Google Wifi: Keeps Zwift connected in my pain cave. I use it.
- Apple TV 4K: Zwift on the big screen. I use two.
- Google Nest Doorbell (wired, 2nd gen): My video doorbell, running in both Google Home and Apple Home. I use it.
Health, recovery and sleep
- FreeStyle Libre 3 Plus: Shows how my blood sugar responds to diet.
- hDrop: Measures my sweat loss in summer and indoors.
- Fourth Frontier Zone: Checks my heart under load in hard sessions.
- Kineon MOVE+: Red and infrared light for sore knees, Achilles and other joints after hard training. I use it.
- Oura Ring 5: My partner’s recovery tracker of choice.
- Eight Sleep: A cooling mattress cover my partner and I use nightly.
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