ICOM M73 Marine Radio - The M73's ergonomic design fits easily in the user's hand and is a rugged, durable radio. The large screen and high intensity LCD offers bright, easy to read characters. Yacht customers benefit from the optional VOX headset and adapter option that allows someone handling dock lines to use both hands, while docking the boat, simultaneously communicating with the captain. The M73 uses a BTL (bridge-tied load) amplifier that doubles the audio output. Its internal speaker delivers a loud 700mW audio output with clear sound. AquaQuake water draining function Dual/Tri-Watch function for monitoring Channel 16 and/or call channel 4 level battery indicator Favorite channel and tag scan functions Auto power save function