FANTASTIC product. Just what I have been searching for. Small, light, good volume and best of all rechargable battery. Volume is loud enough for my office, but not so loud that it disturbs others in the next office. Sound is excellent quality. I hook up my ipod to it then connect the USB connecter to the ipod and plug in to the wall charger. This way both batteries stay charged. I even use it in the car and it works just fine with adequate volume. LOVE it, LOVE it, LOVE it. This is the BEST and CHEAPEST ipod accessary i've purchased.