TDK Life On Record TREK-360 Bluetooth Wireless Speaker (Black) Bluetooth technology delivers high quality, near lossless wirelessaudio streaming for superior sound. Configured with omnidirectional, room-filling TDK SignatureSound produced by 4 full range left and right speakers anda ported subwoofer Customize your sound experience using built-in trebleand bass controls Rechargeable battery provides up to 6 hours of portable audio. Weatherized design protects against spraying water