Xiaomi Watch S1: specs, who it fits and compatible phones
Xiaomi Watch S1 is a smartwatch released in 2022 that works with iPhone and Android. It lists Dual-band GNSS, 5ATM and Sapphire.
Specifications
| Release year | 2022 |
|---|---|
| Case size | 46 mm |
| Display | AMOLED |
| Brightness | 450 nits (approx.) |
| Battery as listed | Up to 12 days |
| Water rating | 5ATM |
| Glass | Sapphire |
| Case material | Stainless steel |
| GPS type | Dual-band GNSS |
| Operating system | MIUI Watch (RTOS) |
| Works with | iPhone and Android |
| Connection | None |
| 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 Xiaomi
| Model | Release year | Case size | Battery as listed | Water rating | GPS type | Works with |
|---|---|---|---|---|---|---|
| Xiaomi Watch S1 Active | 2022 | 46.5 mm | Up to 12 days | 5ATM | Dual-band GNSS | iOS and Android |
| Xiaomi Watch S4 41mm | 2025 | 41 mm | Up to 8 days light use ยท 4 days regular | 5ATM | Dual-band GNSS | iOS and Android |
| POCO Watch | 2022 | - | Up to 14 days | 5ATM | Standard GPS | iOS and Android |
Closest models from other brands
| Model | Release year | Case size | Battery as listed | Water rating | GPS type | Works with |
|---|---|---|---|---|---|---|
| Amazfit GTS 4 | 2022 | - | Up to 8 days | 5ATM | Dual-band GNSS | iOS and Android |
| Amazfit Balance | 2023 | 46 mm | Up to 14 days | 5ATM | Dual-band GNSS + maps | iOS and Android |
| Huawei Watch Ultimate | 2023 | 48.5 mm | Up to 14 days | 10ATM | Dual-band GNSS + maps | iOS and Android |
Compared with Xiaomi Watch S1 Active, Xiaomi Watch S1 lists Stainless steel case material, where Xiaomi Watch S1 Active lists Reinforced polymer.
Compared with Xiaomi Watch S4 41mm, Xiaomi Watch S1 lists a larger case (46 mm against 41 mm) and an older release year (2022 against 2025).
Compared with POCO Watch, Xiaomi Watch S1 lists dual-band GPS, where POCO Watch lists single-band, a shorter listed battery (12 days against 14) and Stainless steel case material, where POCO Watch lists Polymer.
Compared with Amazfit GTS 4, Xiaomi Watch S1 lists a longer listed battery (12 days against 8) and Stainless steel case material, where Amazfit GTS 4 lists Aluminum.
Compared with Amazfit Balance, Xiaomi Watch S1 lists a shorter listed battery (12 days against 14), an older release year (2022 against 2023) and Stainless steel case material, where Amazfit Balance lists Aluminum.
Compared with Huawei Watch Ultimate, Xiaomi Watch S1 lists a shorter listed battery (12 days against 14), a lower ATM rating (5 against 10) and an older release year (2022 against 2023).
Only values listed exactly are compared.
Position in the catalog
Its listed battery of 12 days is above 37% of 46 smartwatches with a single plain days value. Its case size of 46 mm is larger than 40% of 52 smartwatches with a single exact size. Its exact water rating of 5ATM is above 4% of 78 smartwatches with a single exact ATM rating. It was released in 2022. Among 128 smartwatches with an exact release year, 24% were released in 2022 or earlier and 91% were released in 2022 or later.
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
- Xiaomi smartwatches
- All models
Last verified September 26, 2026
Features change with updates. Check the maker's current details. See our methodology