OnePlus Watch 2 vs Amazfit T-Rex 3
5 recorded spec differences. OnePlus Watch 2 is currently the cheaper of the two on Amazon.sa (SAR 905 vs SAR 1,072, checked 1 Nov 2026).
Specifications side by side
| Spec | OnePlus Watch 2 | Amazfit T-Rex 3 |
|---|---|---|
| Phone, battery and calls | ||
| Battery life | 4.17 days | 27 days |
| Bluetooth calls | Yes | — |
| Phone compatibility | Android | — |
| Built-in GPS | Yes | Yes |
| Cellular (LTE/eSIM) | Yes | Yes |
| Size, screen and durability | ||
| Case size | 46 mm | 48 mm |
| Display size | 1.43 in | 1.5 in |
| Water resistance | 5 ATM | 10 ATM |
| Case material | Stainless steel | — |
| Weight | 49 g | 68.3 g |
| Display type | AMOLED | AMOLED |
| Health and payments | ||
| Blood oxygen (SpO2) | — | Yes |
| ECG | No | No |
| Heart-rate tracking | Yes | Yes |
| Contactless payment (NFC) | Yes | Yes |
| Other specs | ||
| Release year | 2024 | 2024 |
| dust resistance rating | IP68 | IP68 |
| App control (Wi-Fi) | Yes | Yes |
Highlighted rows differ. Facts come from each Amazon.sa listing. As an Amazon Associate we earn from qualifying purchases. Buying through our links costs you nothing extra.