Hands free 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, carvisor, clothing and more. Features water resistant coating to protect unit from incidental moisture such as sweat and rain. Drawstring travel pouch included.