Kospet Tank T3 Ultra 2: specs, who it fits and compatible phones

Kospet Tank T3 Ultra 2 is a sport watch released in 2024 that works with iPhone and Android. It lists Dual-band GNSS, 5ATM · IP69K and SpO2, Heart rate.
Specifications
| Release year | 2024 |
|---|---|
| Case size | 51 mm (approx.) |
| Display | AMOLED |
| Brightness | 1000 nits |
| Battery as listed | 470mAh · 12 days · 30-35 GPS hours (approx.) |
| Water rating | 5ATM · IP69K |
| GPS type | Dual-band GNSS |
| Operating system | KOSPET OS |
| Works with | iPhone and Android |
| Connection | No cellular connection |
| Plan needed | None |
| Health sensors | SpO2, Heart rate |
Who it fits
- Works with iPhone and Android.
- Lists an exact water rating of 5ATM or higher.
How it compares
Closest models from Kospet
| Model | Release year | Case size | Battery as listed | Water rating | GPS type | Works with |
|---|---|---|---|---|---|---|
| Kospet Tank M3 Ultra | 2024 | 53 mm (approx.) | Up to 15 days | 5ATM · IP69K | Dual-band GNSS | iOS and Android |
| Kospet Tank M4 | 2025 | 52 mm (approx.) | Up to 15 days regular use | 10ATM · IP69K | Dual-band GNSS | iOS and Android |
| Kospet Tank T4 | 2025 | 50 mm (approx.) | Up to 15 days (approx.) | 10ATM (approx.) | Dual-band GNSS | iOS and Android |
Closest models from other brands
| Model | Release year | Case size | Battery as listed | Water rating | GPS type | Works with |
|---|---|---|---|---|---|---|
| Amazfit T-Rex 3 | 2024 | 48.5 mm | Up to 27 days in regular mode · up to 40 days in saver mode | 10ATM | Dual-band GNSS + maps | iOS and Android |
| COROS PACE Pro | 2024 | 46 mm | Up to 20 days · 38 GPS hours | 5ATM | Dual-band GNSS + maps | iOS and Android |
| COROS Vertix 2S | 2024 | 50.3 mm | 40 days · 118 GPS hours (approx.) | 10ATM | Dual-band GNSS + maps | iOS and Android |
Compared with Kospet Tank M4, Kospet Tank T3 Ultra 2 lists an older release year (2024 against 2025).
Compared with Kospet Tank T4, Kospet Tank T3 Ultra 2 lists an older release year (2024 against 2025).
Compared with Amazfit T-Rex 3, Kospet Tank T3 Ultra 2 lists a dimmer listed display (1000 nits against 2000).
Compared with COROS PACE Pro, Kospet Tank T3 Ultra 2 lists a dimmer listed display (1000 nits against 1500).
Only values listed exactly are compared.
Phone compatibility and plan
No plan is listed as needed.
Sensors and features are listed as the maker names them and are not medical measurements.
Related guides and lists
- Battery life explained
- Phone compatibility
- Water resistance ratings
- Sensors explained
- Kospet smartwatches
- All models
Last verified September 26, 2026
Features change with updates. Check the maker's current details. See our methodology