Display
- Apple Watch Ultra 3
- 422 × 514 pixels; 326 ppi; 1,245 mm² display area
- Amazfit T-Rex Ultra 2
- 480 × 480 pixels, 322 ppi
Wearable comparison
Apple Watch Ultra 3 vs Amazfit T-Rex Ultra 2
Compare battery life, health tracking, display and fit.
01Selected  Apple Watch Ultra 3
KSh 90,000In Stock | 02  Amazfit T-Rex Ultra 2
KSh 85,000Out of Stock |
|---|
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2 of 4 products
Our quick verdict
The Apple Watch Ultra 3 runs watchOS built around the iPhone, takes ECG heart-rhythm readings, is lighter to wear all day and has a premium titanium build with a ceramic back, though it works only with an iPhone, while the Amazfit T-Rex Ultra 2 lasts much longer between charges (30 days vs 42 hours), works with Android phones and iPhones and gives daily recovery and BioCharge scores.
Battery life
- Apple Watch Ultra 3
- Up to 42 hours per charge
- Amazfit T-Rex Ultra 2
- 870 mAh battery
Portability
- Apple Watch Ultra 3
- 61.6 g
- Amazfit T-Rex Ultra 2
- 89.2 g
Storage
- Apple Watch Ultra 3
- 64 GB storage
- Amazfit T-Rex Ultra 2
- Up to 64 GB storage
Software
- Apple Watch Ultra 3
- WatchOS 26
- Amazfit T-Rex Ultra 2
- Works with the Zepp app
Key differences
The main differences to help you choose.
Apple Watch Ultra 3
- Lighter: 61.6 g (vs 89.2 g).
- ECG heart-rhythm readings.
- Titanium case and ceramic back (vs plastic case).
- Slimmer: 12 mm thick (vs 14.3 mm).
- Dual-band Wi-Fi (vs 2.4 GHz only).
Amazfit T-Rex Ultra 2
- Longer battery life: up to 30 days (vs 42 hours).
- Works with Android phones and iPhones.
- Daily recovery and BioCharge scores.
- Rated for free diving to 45 m (vs 40 m).
What matters most to you?
6 priorities selected.
| Priority | Apple Watch Ultra 3 | Amazfit T-Rex Ultra 2 |
|---|---|---|
| Battery life | Up to 42 hours per charge | 870 mAh battery |
| Portability | 61.6 g | 89.2 g |
| Storage | 64 GB storage | Up to 64 GB storage |
| Display | OLED display, 326 ppi | 1.5-inch OLED display, 322 ppi |
| Software | watchOS 26 | Works with the Zepp app |
| Connections | Wi-Fi 4, Bluetooth 5.3 | Wi-Fi 4, Bluetooth 5.2 |
| Water resistance | 100 m under ISO 22810:2010 | 10 ATM |
Tick a topic above to see how each product answers it.
Detailed comparison
Explore the full specifications, section by section.
These products have the same published specifications.
Similarities
- Both support Wi-Fi 4.
- Both work with a companion app.
- Both take calls over Bluetooth.
- Both have OLED displays.
- Both offer up to 64 GB of storage.
- Both connect over Bluetooth.
In summary
Get the Amazfit T-Rex Ultra 2 if you want much longer battery life and a choice of Android phone or iPhone, or the Apple Watch Ultra 3 if you would rather have ECG heart-rhythm readings and a lighter watch for all-day wear.
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