Case size: 42mmModel: SMA09-3Version Type: Mainland ChinaStrap style: classic buttonCommunication type: Cannot insert cardStrap size: M / L (suitable for 150-200 mm wrist circumference)Watch Collection: Silver Black Black Leather Strap Leather Strap Brown Leather Strap Leather Strap Case Material: AluminumStrap material: stainless steelDial shape: roundFunction: Heart rate monitoring Intelligent reminder Sleep monitoring Bluetooth call Step counter Remote control Self-timer WaterproofWireless distance: 5m (inclusive) -10m (inclusive)Screen resolution: 240x240 pixelsBattery capacity: 300mAhConnection method: MagneticScreen size: 1.3 inchesStorage capacity (RAM): 128GBWeight: 56g