The Cobra CBTH2 Premium Bluetooth (R) headset has 7 hours of talk time, up to 150 hours of standby time, and an operating range of 9.8m This Premium headset is equipped with Bluetooth version 2.0, which guarantees rapid transmission of data between the Bluetooth device and cellular phone. Developed with superior quality material, the over-the-head style headset has a light-weight sleek design, and optional wear of both ears that provides comfort for any user. The simple one-touch button creates the ability for answer/end control, redialing, and voice dialling. Easy volume control provides other functions such as, placing calls on hold, transferring calls, and 3-way conference calls. The home charger powers down, even when plugged in, to save power and help preserve the environment. Package includes USB charging cable, home charger, vehicle charger, extra ear cover, manual, and a 1-year warranty.