Xiaomi
Device summary
Xiaomi
Xiaomi Watch S3
Full specifications
| Basic information | ||
|---|---|---|
| Release year | 2025 | 2023 |
| Starting price | — | — |
| Display size | 1.5-inch | 1.4-inch |
| Dimensions | 47.0 mm × 47.0 mm × 12.3 mm | 47.0 mm × 47.0 mm × 12.0 mm |
| Weight | 56 g | 44 g |
| Front material | — | — |
| Back material | — | — |
| Display | ||
| Display technology | AMOLED | AMOLED |
| Resolution | 480 × 480 | 466 × 466 |
| Peak brightness | 1500 nits | — |
| Performance | ||
| Chipset | Snapdragon W5 Gen 1 + BES2800 | — |
| RAM | 2 GB | — |
| Storage | 32 GB | — |
| Expandable storage | No | No |
| Battery & charging | ||
| Charging standard | Magnetic charging dock | Magnetic charging dock |
| Battery type | Lithium-ion polymer | Lithium-ion polymer |
| Battery capacity | 930 mAh | 486 mAh |
| Connectivity | ||
| Cellular | GPS / multi-GNSS | GPS / multi-GNSS |
| Bluetooth | Bluetooth | Bluetooth |
| NFC | Yes | Yes |
| Build & durability | ||
| Ingress protection | 5 ATM | 5 ATM |
| Basic information | ||
|---|---|---|
| Release year | 2025 | 2023 |
| Starting price | — | — |
| Display size | 1.5-inch | 1.4-inch |
| Dimensions | 47.0 mm × 47.0 mm × 12.3 mm | 47.0 mm × 47.0 mm × 12.0 mm |
| Weight | 56 g | 44 g |
| Front material | — | — |
| Back material | — | — |
| Display | ||
| Display technology | AMOLED | AMOLED |
| Resolution | 480 × 480 | 466 × 466 |
| Peak brightness | 1500 nits | — |
| Performance | ||
| Chipset | Snapdragon W5 Gen 1 + BES2800 | — |
| RAM | 2 GB | — |
| Storage | 32 GB | — |
| Expandable storage | No | No |
| Battery & charging | ||
| Charging standard | Magnetic charging dock | Magnetic charging dock |
| Battery type | Lithium-ion polymer | Lithium-ion polymer |
| Battery capacity | 930 mAh | 486 mAh |
| Connectivity | ||
| Cellular | GPS / multi-GNSS | GPS / multi-GNSS |
| Bluetooth | Bluetooth | Bluetooth |
| NFC | Yes | Yes |
| Build & durability | ||
| Ingress protection | 5 ATM | 5 ATM |
Key differences
The most meaningful measured gaps in size and weight — not an overall winner.
Weight
Xiaomi Watch S3
12 g lighter
Thickness
Xiaomi Watch S3
0.3 mm thinner · minor difference
Display size
Xiaomi Watch 5
0.1 in larger display · minor difference
Height
Very similar height
What these size differences mean
Calculated from the dimensions shown, rounded to 0.1 mm and 1 g. Percentages use the smaller measurement as the reference. Fold and rotation settings affect the dimensions compared.
- Both have the same listed width (47 mm) at the displayed precision. Check this difference against the width of your current device and pocket opening.
- Both have the same listed height (47 mm) at the displayed precision. This describes the body outline; screen diagonal alone does not tell you the overall size.
- Xiaomi Watch 5 is 0.3 mm (2.5% relative to Xiaomi Watch S3) thicker. Cases and camera protrusions can change the clearance you need.
- Xiaomi Watch S3 is 12 g lighter. This is the listed device-weight difference, not a measured comfort rating.
Use these figures to compare physical size. They do not establish one-handed reach, pocket fit, durability or an overall winner.
Sources and measurement notes
Sizometry compares published specifications and calculates differences. These are not hands-on measurements or tests of comfort, performance or pocket fit.
Check the exact model, year, region and configuration on the linked page. References may cover several variants. Folded and unfolded dimensions differ; cases and camera protrusions may change the space a device needs. Drawings share a relative scale and are not calibrated to life size on your screen.