... USB Input smart/portable design with seamless steel tube Fashionable Wireless Mini Speaker Sytem, Mobile Speaker with USB Input Description1) Unit ... built-in 450mAh Lithium battery, unit size L60*W60*H50mm2. Bluetooth V2.1 technology, operating distance up to 10-meter 3 ... hrs10.power indicator ight:blue light11.drive:40mm, 4R,3W12. Works with Mobile Phones, MP3/4, Portable CD/DVD players, iPhone ...