Features: Portable wireless BT earphones, take out from the charging compartment, automatically turn on and pair. BT5.3 technology has lower power consumption and more stable signal transmission. Threadless earphone is more flexible and convenient, avoid earphone cable winding. Wide application in daily life, driving, listening to music, exercising, playing games, watching videos. 35mAh battery single ear earphone, and charged automatically in the 200mAh charging case. Specifications: BT version: V5.3 Speaker: 8mm Headphone battery35mah Rechargeable compartment battery: 200mah Standby time with power off: approx. 6 months Music time: 5 hours Talking time: 5 hours Headset charging time: approx. 40 minutes Charging time of the charging compartment: approx. 1 hour Communication distance: 10M Charging interface: micro Charging voltage: DC5V/1A Colour: black Package size: 8.1*3.3*12cm Package List: 2 * Headphone 1 * Charging Case