Stereo MINI Speaker Portable ball Speaker Audio Dock for 3.5mm iphone 5 4S ipod music player Gross Weight/Package: 0.3 ( kg ) Package Size: 30.0 * 30.0 * 30.0 ( cm ) Several power supply manners including battery,computer USB,adaptor DC-5 V allow you to enjoy the charm of digital products at any time. This compact travel speaker system is ideal for use at the office,Home carry where you go.