Thanks to the IP67 water resistance rating, the HMR BT Bluetooth® audio controller/receiver is ideal for small boat and Powersports applications. When connected directly to an amplifier, it can be used as a stand-alone source unit/receiver or it can provide Bluetooth® connectivity to any source unit with line-level inputs. The white LED backlit push-button controls are always well visible at any hour of the day. Ready to have some serious fun with the HMR BT Bluetooth® Audio Controller/Receiver?