CRAIG CBH508 Stereo Headphone with Bluetooth Wireless Technology - Color May Vary Bluetooth Version 3.0 / 	Static Current : Under 10UA / Working Current : Under 30mA Working Voltage: 4.2V / Charge Current :30mA-150mA (Red LED Light Up) / Max Headset Output Power: L20mw R20mw Battery Capacity : 330mAH 3.7v / Charge Time: 3 Hours / Working Time: Above 8 Hours Battery Life : 300 Times Rechargeable / Available Distance : 10M (Open and no Block) / Input Voltage : DC 54V/200mA (Connected to USB port) USB Cable for Charging Jack / Color May Vary: White, Red, Blue, Black