"Now you can experience the most comfortable way to enjoy your favorite music without wires! IOGEAR's Bluetooth Audio Transport incorporate Bluetooth wireless technology to let you enjoy music stored on your Bluetooth enabled cellular phones, MP3 player, or other audio sources up to 33 feet, in beautifully crisp SRS WOW stereo quality sound. IOGEAR's easy to wear clip-on design makes the Audio Transport very conveniently clip onto your shirt and wear comfortablely for extended periods. Easily change tracks*, turn volume up and down, and pause/play your music with the integrated control joystick. The built-in rechargeable battery offers up to 6 hours of music play time. The Bluetooth Audio Transport supports use with Bluetooth cell phones. To make or receive phone calls, simply use the integrated microphone and the included headphones for your conversations. With the support of A2DP profile, you can even pick up incoming phone calls during music playback with the simple press of a button. This unit will work with any Bluetooth-enabled device - computer, PDA, MP3 player, etc. - that supports A2DP and AVRCP Bluetooth profiles. Optionally, you may use IOGEAR's audio adapter with Bluetooth wireless technology (GBMA201 and GBMA211) which connects to any standard 3.5mm, RCA, and phono audio jack with no Bluetooth software required. Free yourself from confining wires and immerse yourself into the music with IOGEAR's wireless Bluetooth stereo headphones! *Functionality of the integrated control joystick on the Bluetooth Audio Transport requires Bluetooth receiver on your music device to support AVRCP profile."