This little speaker puts out a big sound! This heavy-duty speaker achieves exceptional sound quality and fits in the palm of your hand. You can wirelessly stream audio to the speaker from any Bluetooth-equipped mobile phone or tablet, or use the included audio cable to connect the speaker to any mobile device or MP3 player. The available Bluetooth functionality allows hands-free calling also features intelligent voice prompts for ease of setup. The built-in rechargeable battery will delivers hours of enjoyment.