product description: 2000mAh high-capacity charging compartment. Added LED power display. Part of the main and auxiliary ears, left and right ears are free to use. It adopts Hall switch and the new Bluetooth 5.0 chip, which can be connected immediately after opening the cover. The left and right earphones are equipped with buttons to control the music and connect to the phone. Speaker: high-quality true copper ring speaker Chip: true stereo chip Bluetooth solution: Bluetooth 5.0, Jerry 6936D4, high-definition binaural call, master-slave switching Play time: 3-5 hours, the charger can charge the headset 10 times+. Charging time: 40~50 minutes Headphone battery: 35 mAh pure cobalt Battery capacity: pure cobalt 2000 mAh (with IC protection board) Standby time: 60+ days Transmission distance: barrier-free distance 15-18 meters Package weight: 170g Product accessories: 3 sets of ear caps + data cable