Description: This Bluetooth bone conduction headphone is enabled with CVC noise cancellation, which can receive audio from mobile phones, laptops and other Bluetooth devices. After pairing and connecting with PC bluetooth DONGGLE, it can play all kinds of audio from the computer. It can also be used for voice chatting via QQ, MSN and other social softwares. Specification: Material: ABS Color: Black, White (Optional) Transmission Range: 10 m Bluetooth Version: 4.2 Support Protocol: Head set/ handsfree/ A2Dp/ AVRCP Standby Time: About 10 days Battery: Built-in Lithium Battery Battery Capacity: 220 mAh Duration for Call: About 6 hours Duration for Music: About 5 hours Size: Approx. 13x12.3x1.5 cm/ 5.12x4.84x0.59 inch Packing List: 1 x Headphone 1 x User Manual 1 x Charging Cable 2 x Ear Cap