Bluetooth headsets enable you to connect with Bluetooth cellular phones and other Bluetooth-functioned devices wirelessly, and then free your hands. Features: 1) You can adjust the ear hook. Appreciate the flexible, soft-touch headset that delivers a comfortable fit on either ear 2) Solutions for superior sound quality. Clear and smooth voice gives you the feeling of roaming in spring breeze 3) Better interference resistance via the use of Bluetooth technology 4) Plug-and-play and simple pairing for easy use, listening to music and talking over wireless phones and computer Specifications: These are a few main figures. For more, please contact us 1) Standard: Bluetooth V2.0 2) Range: 10m 3) Battery: rechargeable Li-ion 120mAh 4) RF power: class 2 5) Frequency: 2.402GHz-2.480GHz 6) Talk time: 4hrs 7) Standby time: 200hrs