Coby Cube Mini Bluetooth Speaker (Black) Built with an impressive 360-degree surround sound speaker that delivers beautiful, clear, full-range sound. It has over 7 hours of playback battery life. A built-in microphone allows for hands-free calling. Designed for your mobile lifestyle, so it can easily fit into your bag or backpack. The powerful range can connect to your device from 33 feet away, so you can enjoy your music from a distance without wires. It syncs perfectly with iPhones, iPads, Android devices and many more.