Amazfit T-Rex Dual Solar First Look

Amazfit T-Rex Dual Solar First Look

We’ve seen rugged Amazfit watches with huge batteries before. We’ve seen sapphire. We’ve seen titanium, 3,000-nit AMOLED displays, flashlights, dual-band GPS and offline maps.

Solar is the thing that makes this watch different.

Amazfit uses two photovoltaic surfaces. The front collector works during normal wear, while the larger rear collector sits inside the glass-ceramic back. Amazfit says the rear collection area is roughly twice as large as the front one.

There is an obvious catch: your wrist normally blocks the back.

Amazfit’s solution is basically to treat the watch like another piece of expedition equipment. Take it off during a stop, expose the rear panel to the sun, or attach it to your pack using the supplied lanyard. T3 also highlights this as the practical way to make use of the larger rear collector. It’s clever — but definitely niche.

Ignore the 180-day number for normal use

This needs to be made crystal clear because 180 days is going to be plastered across headlines.

That’s not the normal smartwatch battery figure.

Amazfit itself also states that solar is intended to slow battery consumption rather than replace conventional charging. Temperature protection can stop charging when the watch becomes too hot, and solar charging is disabled near a full battery.

That is a much healthier way to look at the feature. Solar is an endurance extender, not magic infinite power.

This is where things get surprisingly complicated.

Amazfit’s own comparison data shows something important: the Dual Solar does not automatically have the longest battery life when sunlight is removed from the equation.

T-Rex Dual Solar vs T-Rex Ultra 2

Ultra 2 gets a larger 1.5-inch screen, 30-day normal battery rating and 50 hours of accurate GPS, compared with 1.32 inches, 25 days and 41 hours on the Dual Solar.

The Dual Solar wins once you can meaningfully harvest sunlight.

So I wouldn’t consider it a straightforward replacement for the Ultra 2. The Ultra remains appealing for someone who simply wants long battery life without thinking about solar exposure.

T-Rex Dual Solar vs T-Rex 3 Pro

The 48mm T-Rex 3 Pro costs $399.99, has a larger 1.5-inch 3,000-nit AMOLED display, sapphire crystal, Grade 5 titanium components, maps, a flashlight, Bluetooth calling and up to 25 days of normal battery life.

The Dual Solar costs another $250. That’s a huge premium.

You’re primarily paying for solar endurance, the expedition-oriented design and newer navigation/outdoor capabilities — not a dramatically better everyday smartwatch.

For someone hiking every weekend, the T-Rex 3 Pro may remain the sweet spot.

For someone disappearing into the backcountry for several days at a time, the Dual Solar makes much more sense.

And don’t overlook the regular T-Rex 3

Here’s the slightly awkward member of the family.

The regular T-Rex 3 costs $279.99 and is rated for up to 27 days of typical use and 42 hours in accurate GPS mode.

Yes — without solar, those numbers are actually slightly higher than the Dual Solar’s 25 days and 41 hours.

Obviously the new watch is far more premium and sophisticated, but that comparison shows just how specialized the Dual Solar really is.

That 1.32-Inch Display Is Going to Be Controversial

The screen itself sounds excellent: AMOLED, sapphire, 466 × 466 resolution and up to 3,000 nits.

The size is the weird part. The case is 51.4mm across, yet the display measures only 1.32 inches.

For comparison, the 48mm T-Rex 3 Pro fits a 1.5-inch display.

The reason is the solar hardware surrounding the screen, but early independent coverage has already identified that screen-to-case ratio as one of the biggest compromises. The5krunner described the usable display as comparatively small for such a large expedition watch.

I’d definitely want to see this one inperson before buying it purely from product photos.

Navigation Looks Properly Serious

Amazfit isn’t relying solely on battery gimmicks here.

The T-Rex Dual Solar supports:

• Preloaded offline maps
• Downloadable contour maps
• Ski resort maps
• Turn-by-turn directions
• POI search
• Round-trip route creation
• On-watch route planning
• Automatic rerouting
• Waypoints
• Route deviation alerts
• Direct-return navigation

Amazfit says point-to-point routes can be created directly on the watch without a phone or network connection, with storage for up to 100 routes.

That’s exactly the type of functionality that makes extended battery life useful rather than merely impressive on a spec sheet.

Fitness and Health Tracking

Underneath the adventure-watch exterior is Amazfit’s BioTracker 6.0 PPG sensor, supporting continuous heart rate, blood oxygen, stress, sleep stages, sleep HRV, naps and skin-temperature readings.

You also get more than 180 sports modes, external sensor support for heart-rate straps, running power meters and cycling sensors, plus Zepp Coach and PeakBeats training metrics.

The bigger question isn’t feature count. It’s accuracy.

Because this watch has just launched, there isn’t enough independent GPS, heart-rate, elevation and battery testing yet to confidently say whether it improves on recent T-Rex hardware.

That will matter much more for our eventual full review than another list of 180 sport modes.

Early Amazfit community reaction is mixed but curious. Some commenters are excited about seeing solar paired with AMOLED, while others immediately question whether the solar gain will justify the extra size, price and first-generation hardware. The unusually small display relative to the case has also attracted early criticism.

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by u/IngenieurCyber from discussion
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