Amazfit T-Rex 3 vs Amazfit T-Rex Dual Solar
Amazfit T-Rex 3 (2024, listed at $279) and Amazfit T-Rex Dual Solar (2026, listed at $649.99) are both sport watches, so the choice comes down to specifics.
Specs last updated · table prices are list prices; each card shows Amazon's current price when available
Amazfit T-Rex 3
Rugged AMOLED at half the price — dual-band GPS, offline maps, 27-day battery.
Amazfit T-Rex Dual Solar
Solar-charging rugged AMOLED: titanium bezel, sapphire glass, 10 ATM, dual-band GPS with offline maps, a flashlight and up to 25 days of typical use.
The verdict
On the numbers we track, Amazfit T-Rex 3 wins on battery life (27 days vs 25 days), weight (68 g vs 69 g) and price ($279 vs $649.99).
Bottom line: on raw specs the Amazfit T-Rex 3 leads 3 to 0, but five spec categories are only a starting point. Match it to your phone, your main sport and your budget before you decide, or run the free quiz to see how each ranks for your answers.
Spec by spec
| Spec | Amazfit T-Rex 3 | Amazfit T-Rex Dual Solar |
|---|---|---|
| Battery (rated) | 27 days | 25 days |
| Weight | 68 g | 69 g |
| List price | $279 | $649.99 |
| Water rating | 10ATM | 10ATM |
| Tracked features | 6 | 6 |
| Case size | 48 mm | 51.4 mm |
| Display | AMOLED | AMOLED |
| Works with | both iPhone and Android | both iPhone and Android |
| Listed best for | outdoor adventure and multisport and triathlon | outdoor adventure and multisport and triathlon |
| Released | 2024 | 2026 |
Trophy marks the better value on the five measurable specs. Battery is the manufacturer's rating, not our test. How we score is on the methodology page.
Feature overlap
Both have (6)
- built-in GPS
- blood-oxygen (SpO₂)
- on-device music
- AMOLED display
- offline maps
- swim tracking
Only Amazfit T-Rex 3 (0)
Nothing unique.
Only Amazfit T-Rex Dual Solar (0)
Nothing unique.
Which one should you pick?
Pick the Amazfit T-Rex 3 if…
- You want to spend less: it lists for $370.99 less.
- You want fewer charges: about 27 days per charge vs 25 days.
- You want a lighter watch: 68 g vs 69 g.
- You might switch phones: it works with both iPhone and Android, the Amazfit T-Rex Dual Solar only works with Android.
Skip it if…
- • You have a small wrist (under about 160 mm) — the 48 mm case we list is large (check whether a smaller size is sold).
- • You want something light enough to sleep in — it weighs 68 g.
Pick the Amazfit T-Rex Dual Solar if…
- You might switch phones: it works with both iPhone and Android, the Amazfit T-Rex 3 only works with Android.
- You want the newer model (2026 vs 2024).
Skip it if…
- • You have a small wrist (under about 160 mm) — the 51.4 mm case we list is large (check whether a smaller size is sold).
- • You want something light enough to sleep in — it weighs 69 g.
- • You are watching your budget — the list price is $649.99.
Frequently asked questions
Which has better battery life, the Amazfit T-Rex 3 or the Amazfit T-Rex Dual Solar?
The Amazfit T-Rex 3 has the longer rated battery life: about 27 days per charge against 25 days. These are manufacturer ratings; heavy GPS, always-on display and cellular use will cut both.
Which is cheaper, the Amazfit T-Rex 3 or the Amazfit T-Rex Dual Solar?
The Amazfit T-Rex 3 has the lower list price: $279 against $649.99 in our database. List prices change often, so check Amazon for today's price.
Do the Amazfit T-Rex 3 and Amazfit T-Rex Dual Solar work with iPhone and Android?
Yes, they have the same phone support: both iPhone and Android.
Which is better for swimming, the Amazfit T-Rex 3 or the Amazfit T-Rex Dual Solar?
Neither has an edge on water rating: both are rated 10ATM. 10ATM is suitable for swimming and surface water sports. It is not a dive rating unless the maker says so.
Not sure either is right for you?
Nine questions about your phone, sport, wrist and budget, scored against all of our watches with the reasoning shown.
Take the free quizWhere each one ranks #1 in our quiz
Amazfit T-Rex 3
It is not the top pick for any standard quiz profile.