Premium smartwatch featuring a 1.74-inch AMOLED square display with 2000 nits peak brightness and full-touch control. Choose between lightweight aluminum alloy or premium ceramic construction. Equipped with advanced sensors including heart rate, blood oxygen, accelerometer, gyroscope, and geomagnetic capabilities. Supports five satellite systems for precise GPS tracking. Water-resistant to 5ATM for swimming and shallow water activities. Fast 90-minute charging with a 350mAh battery. Adjustable wristband in TPU, leather, or fluororubber options. Compatible with Android 8.0+ and iOS 14.0+. Seamless integration with the Xiaomi Health app for comprehensive fitness tracking and wellness monitoring.
Specifications:
| Category | Specification |
| Product Model |
Metal version: M2551B1 Ceramic version: M2553B1 |
| Main Body Net Weight |
Metal version: approx. 21.6g (excluding wristband) Ceramic version: approx. 28.7g (excluding wristband) |
| Main Body Size |
Metal version: 42.84 × 32.16 × 9.7 mm (excluding heart rate bump) Ceramic version: 43.97 × 33.35 × 9.7 mm (excluding heart rate bump) |
| Screen Size & Type | 1.74-inch AMOLED color square screen |
| Screen Resolution | 336 x 480, supports full-screen touch operation |
| Screen Brightness | Peak brightness of 2000 nits, supports automatic brightness adjustment |
| Cover Material | 2.5D tempered glass cover |
| Shell Material |
Metal version: Aluminum alloy frame + high-strength polymer fiber Ceramic version: Ceramic frame + high-strength polymer fiber |
| Sensors | Accelerometer, gyroscope, optical heart rate and blood oxygen sensor, ambient light sensor, geomagnetic sensor |
| Waterproof Rating | 5ATM |
| Data Connection |
Supports GNSS, NFC, and Bluetooth™ 5.4 Supports five major satellite systems: BeiDou, GPS, GLONASS, Galileo, and QZSS. |
| Vibration Motor | Linear motor |
| Battery Capacity | 350mAh |
| Battery Type | Lithium-ion polymer battery |
| Charging Time | Approximately 90 minutes |
| Adjustable Wristband Length |
Metal version: 135-205mm Ceramic version: 140-205mm |
| Wristband Material |
Metal version: TPU/genuine leather Ceramic version: Fluororubber |
| System Language | Simplified Chinese, Traditional Chinese, English |
| Support System | Android 8.0 and above or iOS 14.0 and above |
| Companion App | Xiaomi Mi Fitness |
