Model Number: M10 Tws Wireless Earbuds The battery capacity of the storage box: is 2000 mAh Call time: 5-6 hours Charging time: 1-2 hours Playtime: 4-5 hours Transmission distance: 10M Charging voltage: 5V / 1A The battery capacity of the headset: is 50 mAh wireless: Yes Volume Control: Yes Battery Indicator: Digital Display Style: In-Ear, TWS