Item Name: EarphoneMaterial: ABSBluetooth-compatible: 5.1+EDRHeadphone Battery Capacity: 30mAh (Included)Charging Box Battery Capacity: 1200mAh (Included)Headphone Charging Time: about 40 MinutesCharging Time of the Charging Box: about 1.5 HoursHeadphone Battery Life: about 2 HoursFeatures: No Delay, Touch Control, Binaural Call