Technical Specifications: Speaker dimensions 54mm x 55mm Charging and audio in via mini USB Audio in via mini USB to 3.5mm jack Available in Black, Silver, Pink and Blue Lithium Ion Internal rechargeable battery 5w Incisor diffusion 360O sound speaker technology Compatible with Bluetooth Profiles A2DP for streaming Playback time on battery power: Bluetooth 4hr (approx.) wired 9hrs (approx)