The BlueAnt X5i Stereo Bluetooth Headset is a portable multi-function device utilizing the latest cutting edge technologies which allow you to stream high quality __music (from a compatible A2DP* device) and make voice __calls (from a Bluetooth enabled mobile phone, PDA, or computer) without wire. Works great with the iphone Wireless Stereo Music or Voice Connection to your phone or computer no installation mounts on visor Supports Bluetooth Profiles - Handsfree, Headset, A2DP, AVRCP Plug and Play to utilize your computer's sound card Ergonomic and Dynamic Design. Collapsible Neckband for easy portability Detachable Microphone Compact Removable Rechargeable Battery lasts for more than 12 hours