Cylindrical Sports In-Ear 5.2 Bluetooth Headset $ 8.28 Product information: Bluetooth version: V5.2 Communication distance: 10 meters (under barrier-free environment) Bluetooth version: cvc8.0 Single ear capacity: 50mAh Charging bay capacity: 300mAh Music time: about 35h (use with charging bay) Standby time: about 55h (use with charging bay) Charging bay size: 89.9mm30mm Headphone size: 22mm1 5mm Color: black[with flashlight], white[with flashlight], blue[with flashlight] Packing list: Wireless earphone x1pcs