The JBL On Tour Micro is sized to slip easily into a pocket or carry-on bag, but it"s engineered to perform in legendaryJBL style. The JBL Odyssey full-range transducer pounds out dynamic, big-system sound that fills any listening space, and the rechargeable lithium-ion battery and built-in stereo mini-jack cable spare you the hassle of traveling with separate cables a replacement batteries. A mini USB port and included cable let you charge your JBL On Tour Micro from a laptop or other USB host while you"re listening to your favorite music, and a single charge will give you up to six hours of uninterrupted playback. If there is something more that the JBL On Tour Micro could be doing to ensure good times anywhere you and your friends get together, we can"t think of it.