Open ear: Conduction headset deliver sound through the bone, you can hear the surrounding sound when listening to music Application: The V headset suitable for sports cycling and running. Note: It is not waterproof. Lightweight & Stable Fit: Adopted memory titanium alloy skeleton, you can adjust the shape according to different head sizes, and for twist 360 degree 8 Hours Play Time: USB charging and for built in 110mAh battery, enjoy 78 hours music, standby time up to 300 hours, sound quality, for built in microphone, phone calls. V 5.0: Over ear headphones, up to 10 stable connection for phone or tablet. Specifications: Type: Conduction V Headset V Version: 5.0 Frequency Range: 20hz - 20khz Playing Time: 8 Hours Charging Time: about 1 Hour Standby Time: 300 Hours Transmission Distance: More Than 10 Meters Speaker Impedance: 32 Battery Capacity: 110mah Material: PP Size: 169x131x49mm/6.65x5.16x1.93 inch Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful shopping Package included: 1 Piece Conduction Headphones 1 Piece Manual 1 Piece Charging Cable