DC Rainmaker tested the $649 Amazfit T-Rex Dual Solar, an outdoor smartwatch that pairs a 1.3-inch AMOLED screen with front and rear solar panels. The reviewer praised its informative on-watch solar metrics widget and novel industrial design, but concluded that actual solar energy gains are virtually negligible relative to AMOLED power consumption. Significant trade-offs include a reduced 660mAh battery compared to the T-Rex Ultra 2 and rapid overheating during rear-panel solar charging in warm weather, making it an interesting tech showcase rather than a practical endurance tool.
Read the original at DC RainmakerPublished on Savlume: · Content updated: · Source published:
Price wording in the source: “$649/649EUR ($100 more than Ultra 2 at $549/549EUR)”
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The T-Rex Dual Solar combines an AMOLED display with front and rear solar panels, and its Solar widget reports solar gains across several watch modes. It may be worth considering if you specifically want that combination and value the detailed solar data, but the source’s hands-on testing found modest gains, overheating in rear-panel use, and a smaller battery and display than the T-Rex Ultra 2.
Buyers specifically interested in an AMOLED adventure watch with front and rear solar panels and a watch-based view of solar gains.
Savlume Editorial Team. AI-assisted analysis of the source; not a hands-on test. Read source ↗
Based on DC Rainmaker ↗. AI-assisted summary of the source; not a Savlume hands-on test.
The source describes the T-Rex Dual Solar as an ambitious AMOLED-and-solar combination with a useful solar-data interface, but concludes that its real-world solar gains are small and that the design comes with trade-offs including a smaller battery, smaller display, and higher price than the T-Rex Ultra 2.
Who it may suit
People who specifically want an AMOLED watch with front and rear solar panels and detailed on-watch solar-gain information.
Source testing context
The author describes outdoor solar observations and multiple workouts, including approximate exposure durations, battery percentages, and GPS activity results.
The reviewer said days spent outside typically produced about 2.5–3.0 days of smartwatch-mode solar gains, while also noting that solar gains could be offset by battery use.
The source describes the rear panel as facing the wrist when worn and says it is intended to be turned toward the sun when the watch is off the wrist.
The source lists a 660mAh rather than 870mAh battery, a 1.3-inch rather than 1.5-inch AMOLED display, a 50m rather than 45m depth-gauge allowance, a different flashlight color, LiveShare, and a reported $649 versus $549 price.
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