603450 Li-Polymer wearable devices batteries,3.7V 1050mAh wristband battery Voltage:3.7V capacity:1050mAh Type:Li-Polymer Size:6*34*50mm AC Impedance Resistance:≤220mΩ Discharge Cut-off Voltage:3.00V Charge current:200mA Max. Charge Voltage:4.23V Storage humidity:< 75%RH Fast Discharge Current:1050mA Weight:22g Fit for:wearable devices,wristband, smartwatches, smart ring, etc All the batteries datasheet can be customized according to requirements