| key specs |
| Display Size | 36mm | - |
| Compatible OS | Android 8.0 or above, iOS 12.0 or above | Android, iOS |
| Dial Shape | Round | Rectangle |
| Display Type | AMOLED | AMOLED |
| Ideal For | Unisex | Unisex |
| Strap Colour | - | Midnight Black, Flamingo Pink, Sage Green |
| Strap Material | - | Silicone |
| general |
| Brand | Xiaomi | Amazfit |
| Model | Watch S4 15th Anniversary Edition | GTS 2 mini |
| Release date | May 23, 2025 | December 1, 2020 |
| Model Name | Xiaomi Watch S4 15th Anniversary Edition | GTS 2 mini |
| Dial Colour | Black | Midnight Black, Flamingo Pink, Sage Green |
| Dial Shape | Round | Rectangle |
| Size | Regular | Regular |
| Touchscreen | 1.43 | - |
| Interchangeable Strap | Yes | Yes |
| Water Resistant | 5 ATM | Yes |
| Usage | Regular | - |
| Ideal For | Unisex | Unisex |
| Strap Material | - | Silicone |
| Water Resistance Depth | - | 5 ATM |
| Dial Material | - | Aluminum alloy, classic-stainless steel |
| Strap Colour | - | Midnight Black, Flamingo Pink, Sage Green |
| dimensions |
| Width | 47.3 | 35.8 |
| Height | 47.3 | 40.5 |
| Thickness | 12 | 8.95 |
| Weight (g) | 44.50 | 19.50 |
| product details |
| Sensor | Heart Rate Monitor, Stress, Sleep | Huami self-developed BioTracker 2 PPG (support blood-oxygen) biological data sensor, Accelerometer, Gyroscope, Geomagnetic sensor, Ambient light sensor |
| Compatible Device | Android and iOS | Android, iPhone |
| Battery Type | 486mAh | 220mAh |
| Notification | - | Yes |
| Battery Life | - | 14 days |
| Charge Time | - | About 2 hours |
| Charger Type | - | Charging base |
| Rechargeable Battery | - | Yes |
| connectivity features |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.0 BLE |
| Wi-Fi | Yes | - |
| GPS | Yes | - |
| Other Connectivity Features | NFC, Galileo, Glonass, Beidou, QZSS | - |
| platform and storage features |
| Operating System | HyperOS 2 | - |
| Compatible Operating System | Android 8.0 or above, iOS 12.0 or above | Android, iOS |
| camera and display features |
| Display Resolution | 466 x 466 | 354x306 |
| Display Size | 36mm | - |
| Display Type | AMOLED | AMOLED |
| fitness and watch functions |
| Step Count | Yes | Yes |
| Calorie Count | Yes | - |
| Heart Rate Monitor | Yes | Yes |
| Alarm Clock | Yes | Yes |
| Date & Time Display | Yes | Yes |
| Language | English | - |
| Calendar | - | Yes |
| Chronograph | - | Yes |
| Number of Buttons | - | 1 |