Amazfit
Device summary
Xiaomi
Xiaomi Watch S4
Full specifications
| Basic information | ||
|---|---|---|
| Release year | 2025 | 2024 |
| Starting price | — | — |
| Display size | 1.5-inch | 1.4-inch |
| Dimensions | 47.4 mm × 47.4 mm × 12.3 mm | 47.3 mm × 47.3 mm × 12.0 mm |
| Weight | 43 g | 45 g |
| Front material | — | — |
| Back material | — | — |
| Display | ||
| Display technology | AMOLED | AMOLED |
| Resolution | 480 × 480 | 466 × 466 |
| Peak brightness | 2000 nits | — |
| Protection | Sapphire | — |
| Performance | ||
| Expandable storage | No | No |
| Battery & charging | ||
| Charging standard | Magnetic charging | Magnetic charging dock |
| Battery type | Lithium-ion | Lithium-ion polymer |
| Connectivity | ||
| Cellular | GPS / multi-GNSS | GPS / multi-GNSS |
| Wi‑Fi | Wi-Fi | — |
| Bluetooth | Bluetooth | Bluetooth |
| NFC | — | Yes |
| Build & durability | ||
| Frame | Aluminum alloy / fiber-reinforced polymer | — |
| Ingress protection | 10 ATM | 5 ATM |
| Basic information | ||
|---|---|---|
| Release year | 2025 | 2024 |
| Starting price | — | — |
| Display size | 1.5-inch | 1.4-inch |
| Dimensions | 47.4 mm × 47.4 mm × 12.3 mm | 47.3 mm × 47.3 mm × 12.0 mm |
| Weight | 43 g | 45 g |
| Front material | — | — |
| Back material | — | — |
| Display | ||
| Display technology | AMOLED | AMOLED |
| Resolution | 480 × 480 | 466 × 466 |
| Peak brightness | 2000 nits | — |
| Protection | Sapphire | — |
| Performance | ||
| Expandable storage | No | No |
| Battery & charging | ||
| Charging standard | Magnetic charging | Magnetic charging dock |
| Battery type | Lithium-ion | Lithium-ion polymer |
| Connectivity | ||
| Cellular | GPS / multi-GNSS | GPS / multi-GNSS |
| Wi‑Fi | Wi-Fi | — |
| Bluetooth | Bluetooth | Bluetooth |
| NFC | — | Yes |
| Build & durability | ||
| Frame | Aluminum alloy / fiber-reinforced polymer | — |
| Ingress protection | 10 ATM | 5 ATM |
Key differences
The most meaningful measured gaps in size and weight — not an overall winner.
Thickness
Xiaomi Watch S4
0.3 mm thinner · minor difference
Height
Very similar height
Width
Very similar width
Weight
Very similar weight