PORTABLE VHF ICOM IC-M73 NAUTICAL VHF TRANSCEIVER Thin, Elegant, Powerful the new nautical VHF with professional features. 700mW of audio power, 6W of RF power. A large capacity Lithium Ion battery allows up to 18 hours of operation under normal operating conditions. IPX8 level water resistance Slim, ergonomic, wide viewing angle of the LCD display