Model: i12 TWS Bluetooth: Bluetooth V 5.0+ EDR Functions: Bluetooth New 5.0 touch binaural call, remove the headset, automatically boot automatically connect Product weight: 4-5g (single earphone). Charging time: 1-1.5 hours. Single earphone battery capacity: 35mAh. Charger Box Betty: 300mAh. Wireless distance: 10m.