BT version: BLE5.3+BT3.0 BT chip: JL7012/F6 Memory: 64MB Waterproof rating: IP68 BT range: about 10m Screen material: TFT Screen size: 1.83” Screen resolution: 240*286 Touch control mode: capacitive touch control Battery capacity: 300mAh Charging time: about 2.5h Standby time (connected): about 15 days Typical usage time: about 7-10 days Charging mode: magnetic charging Charging input: 5V⎓500mA Overall size: 36.5*44.7*11.5 Band material: silicone Band size: 219*20 Applicable wrist size: 50-220 Body material: top shell: zinc alloy; base shell: PC+ABS Weight: about 50g