K88 Bluetooth headset $ 8.94 Model; K-88 Bluetooth version: TWS5.0 (Jerry 6936D) Use time: 4-5h Headphone battery capacity: 30 mAh Rechargeable battery capacity: 300 mAh Bluetooth distance: 10M Binaural call: support Headphone charging time: 45min. Charging compartment charging time 1.2h _ Headphone size: 41.51716.5mm Charging compartment size: diameter 684422nm