Handsfree is the way to be and the iWBT1 lets you answer and end calls and stream wireless digital audio via Bluetooth from your iPhone, iPad, Android, Windows phone and other Bluetooth-enabled devices. USB jack to charge the unit from any USB power source (cable included). Small size with clip to attach to cap brim, car visor, clothing and more. Drawstring travel pouch included. Features include: Works with Bluetooth wireless audio Send digital audio wirelessly to iWBT1 from your iPad, iPhone, and iPod touch, Android, Blackberry or other Bluetooth-enabled audio device. Adds wireless Bluetooth connectivity to any speaker system equipped with a 3.5 mm aux-in jack Stream your music wirelessly to any speaker system with a 3.5mm input jack. Integrated mic plus talk/end controls Use as a speakerphone with paired cell phone. Built-in rechargeable battery Long-lasting internal lithium ion batteries give speaker plenty of power, plays for up to 8 hours. Unique clip design speaker attaches securely to sports caps, car sun visors, brimmed helmets and hardhats, clothing, bags, and more. Enjoy freedom from headphone cables for open handsfree listening anywhere.