This is a really nice wireless bluetooth speaker. The sound is excellent, and I was impressed with how easy it was to set up. I had it out of the box and synched with my droid smartphone in under a minute without reading the instructions. What really impressed me though was the sound quality. This unit has excellent base for speaker this small. I am very pleased with it, and look forward to enjoying it in my office. The unit operates on a rechargeable battery which is recharged via USB cable hooked to your computer. Once charged, the unit has excellent battery life. I can listen for hours on a single charge. The unit is solidly built, and looks good on the desk. I am very pleased with it, and look forward to enjoying it in my office. You can find it at Easyacc