Amazfit has introduced a new outdoor smartwatch in China, and the Amazfit T-Rex Dual Solar is designed to address one of the biggest challenges for long-distance adventures: keeping a smartwatch powered away from a charger.
The new model also builds on the rugged positioning of the Amazfit T-Rex series, which has become known for combining outdoor durability with fitness and navigation features.
The new rugged smartwatch is now listed on Chinese e-commerce platforms with a price of 4,499 yuan. Its main highlight is a dual-sided solar charging system that allows both the front and back of the watch to collect solar energy.
Unlike conventional smartwatches that primarily rely on a built-in battery, the T-Rex Dual Solar is designed for extended outdoor activities where access to a power outlet may be limited.
Dual-Sided Solar Charging Is the Main Feature
The most distinctive feature of the Amazfit T-Rex Dual Solar is its solar charging system.
Amazfit claims that the watch can deliver up to 25 days of typical battery life. Under a specified test scenario involving three hours of exposure to 50,000 lux light per day, the claimed battery endurance can increase to 34 days when the front receives sunlight or as much as 51 days when the rear receives sunlight.
For users comparing long-lasting wearables, our guide to smartwatches with long battery life offers a broader look at models designed to reduce frequent charging.
These figures make the solar system particularly interesting for hikers, campers, trail runners and other outdoor users who may spend several days away from conventional charging equipment.
However, solar charging performance naturally depends on factors such as light intensity, exposure time, weather conditions and how the watch is being used.
Rugged Titanium Design for Outdoor Adventures
The T-Rex Dual Solar follows the rugged design language associated with Amazfit’s T-Rex series.
The watch uses a Grade 5 titanium alloy bezel, giving it a combination of durability and relatively low weight compared with many conventional metal watch materials.
The display is protected by sapphire glass, which is designed to provide strong resistance against scratches during outdoor use.
On the back, Amazfit uses a glass-ceramic rear panel that incorporates a large solar panel. This allows the rear surface to contribute to solar energy collection instead of leaving the solar charging system limited to the front of the watch.
The result is a design that makes the solar technology part of the watch’s physical structure rather than simply adding a small solar area around the display.
1.32-Inch AMOLED Display with 3,000-Nit Brightness
The Amazfit T-Rex Dual Solar features a 1.32-inch AMOLED display with a claimed peak brightness of 3,000 nits.
High brightness is particularly useful on an outdoor smartwatch because viewing a screen under direct sunlight can be considerably more difficult than using it indoors.
The combination of AMOLED technology and high peak brightness should therefore make the watch better suited to outdoor navigation, workout tracking and quick notifications.
The relatively compact 1.32-inch screen also keeps the watch focused on practical outdoor use rather than trying to replicate the larger display experience of a smartphone.
10 ATM Water Resistance
The new Amazfit smartwatch has a 10 ATM water-resistance rating.
That rating makes the T-Rex Dual Solar suitable for a range of water-related activities and reinforces its positioning as an outdoor-focused wearable.
For users who frequently hike in wet conditions, participate in water sports or simply want a rugged watch that does not need to be removed whenever it encounters water, this can be an important advantage.
Offline Maps and Route Planning
Battery life is only part of the equation for a long-distance outdoor watch. Navigation is equally important when users are away from familiar roads and mobile networks.
The Amazfit T-Rex Dual Solar supports offline topographic maps and route planning.
Offline mapping can be particularly useful for hiking and other outdoor activities because navigation does not have to depend entirely on a constant internet connection.
Combined with the watch’s solar charging system, these navigation capabilities make the T-Rex Dual Solar more suitable for multi-day adventures than a conventional smartwatch designed primarily for everyday urban use.
Continuous Heart Rate and Health Monitoring
The T-Rex Dual Solar is also equipped with an optical heart-rate sensor.
It can monitor heart rate and other health-related data throughout the day, giving users a broader picture of their activity and fitness.
For outdoor athletes, continuous heart-rate tracking can also provide useful information during training and recovery.
As with other consumer wearables, however, health measurements should be regarded as wellness information rather than a replacement for professional medical equipment.
Built for Multi-Day Outdoor Trips
The overall design of the Amazfit T-Rex Dual Solar makes its target audience relatively clear.
This is not simply a smartwatch with a solar-themed design. The combination of dual-sided solar charging, rugged materials, sapphire glass, high-brightness AMOLED display, 10 ATM water resistance and offline navigation is aimed at people who spend significant time outdoors.
Potential users include:
- Long-distance hikers
- Backpackers
- Trail runners
- Campers
- Outdoor explorers
- Adventure travelers
- Users who prioritize long battery life
For these users, the ability to extend battery endurance through sunlight could be more valuable than having the smallest or thinnest smartwatch.
Amazfit T-Rex Dual Solar Specifications
| Feature | Amazfit T-Rex Dual Solar |
|---|---|
| Price | 4,499 yuan |
| Solar charging | Dual-sided |
| Typical battery life | Up to 25 days |
| Solar-assisted endurance | Up to 34 days front / 51 days rear under specified conditions |
| Display | 1.32-inch AMOLED |
| Peak brightness | 3,000 nits |
| Bezel | Grade 5 titanium alloy |
| Cover glass | Sapphire glass |
| Rear panel | Glass-ceramic |
| Water resistance | 10 ATM |
| Navigation | Offline topographic maps and route planning |
| Health sensor | Optical heart-rate sensor |
A Different Approach to Long Battery Life
Most smartwatches attempt to solve battery-life limitations by increasing battery capacity or improving power efficiency. The Amazfit T-Rex Dual Solar takes a different approach by making solar energy collection a central part of the hardware design.
The dual-sided system is particularly notable because both the watch face and rear surface can collect light.
According to the listed specifications, this can extend the claimed endurance substantially under strong, controlled lighting conditions. Real-world results will naturally vary, but the concept is well suited to outdoor environments where sunlight is readily available.
Amazfit T-Rex Dual Solar Price and Availability
The Amazfit T-Rex Dual Solar is currently listed on Chinese e-commerce platforms for 4,499 yuan.
At this price, it sits firmly in the premium outdoor smartwatch category. Its value will therefore depend heavily on whether users can make practical use of its solar charging, rugged construction and navigation features.
For someone who spends most of their time indoors and charges a smartwatch every night, these features may be less important. For multi-day outdoor trips, however, reducing dependence on a wall charger could be considerably more useful.
Final Thoughts
Amazfit T-Rex Dual Solar brings a distinctive idea to the rugged smartwatch market: instead of treating solar charging as a small supporting feature, it builds the technology into both sides of the watch.
With a claimed 25-day typical battery life, solar-assisted endurance of up to 34 or 51 days under specified lighting conditions, a Grade 5 titanium bezel, sapphire glass, 3,000-nit AMOLED display, 10 ATM water resistance and offline navigation, the watch is clearly designed for extended outdoor use.
Its 4,499-yuan price places it above ordinary fitness watches, but the combination of rugged hardware and dual-sided solar charging could make it particularly appealing to serious outdoor enthusiasts who value battery independence.
As Amazfit expands its T-Rex lineup, the T-Rex Dual Solar could stand out as one of the company’s most specialized options for long-distance adventures and multi-day exploration.