Xiaomi Watch S1 Pro vs Xiaomi Watch S4 41mm
Comparing 2 products
| General Overview | ||
| Device Type | Round | Bar |
| Model | M2134W1 | M2502W1 |
| Announced | 2022, August | 2025, June 26 |
| Released | 2022, August | 2025, June 26 |
| Status | Available | Available |
| Estimate Price | - | About 120 EUR |
| Design | ||
| Type | Bar | Bar |
| Dimensions | 46 x 46 x 11.8 mm (1.81 x 1.81 x 0.46 in) | 41.2 x 41.2 x 9.5 mm (1.62 x 1.62 x 0.37 in) |
| Weight | Unspecified | 32 g (1.13 oz) |
| Protection | Sapphire crystal front, stainless steel frame, sapphire crystal (heart rate zone), plastic back | Stainless steel bezel and frame |
| Colors | Black, Silver | Black, Green, White, Gold |
| Display | ||
| Display Type | AMOLED | AMOLED |
| Size | 1.47 inches | 1.32 inches |
| Resolution | Unspecified | 466 x 466 pixels |
| Display Colors | 16M colors | - |
| Pixel Density | Unspecified | 320 ppi density |
| Touch Screen | No | Yes |
| Features | 600 nits (typ) | 1500 nits (HBM), 2200 nits (peak) |
| Display Protection | - | Scratch/drop-proof glass |
| Software | ||
| OS | Proprietary OS (China) | HyperOS 2 |
| Hardware | ||
| Chipset | Unspecified | N/A |
| CPU | One-core | N/A |
| GPU | Unknown | N/A |
| RAM | 1 GB or More | N/A More than 1 GB |
| Internal Storage | Unspecified | N/A More than 8 GB |
| Card Slot | No | No |
| Sensors | Accelerometer, gyro, compass, barometer, heart rate, SpO2, thermometer (body temperature) | Accelerometer, gyro, compass, barometer, heart rate, SpO2, thermometer (skin temperature) |
| Connectivity | ||
| Bluetooth | 5.2, A2DP, LE | 5.4, A2DP, LE |
| Wi-fi | Wi-Fi 802.11 b/g/n | No |
| Wi-fi Hotspot | No | No |
| USB | No | No |
| GPS | Yes, with dual-band. GLONASS, GALILEO, BDS, QZSS | GPS, GLONASS, GALILEO, BDS, QZSS |
| NFC | No | No |
| Wireless Charging | Yes, 100% in 85 min (advertised) | - |
| Data | ||
| GPRS | No | No |
| EDGE | No | No |
| Speed | No Data | No Internet |
| Battery | ||
| Battery Type | Li-Poly (Lithium Polymer) | Li-Poly (Lithium Polymer) |
| Capacity | 500 mAh, Battery | 320 mAh, Battery |
| Placement | Non-removable | Non-removable |
