M73 PLUS Handheld VHF - 6W - IPX8 Submersible - Active Noise Canceling, Built-In Voice Recorder. The M73 PLUS if perfect for the commercial marine market and radio users familiar with Icom's celebrated M73 VHF handheld. The M73 PLUS features 6 Watts of high transmit power and waterproof IPX8 Submersible construction. The M73 PLUS also promotes a popular hourglass body shape and comfortable side grips for intuitive one-handed operation.. The M73 PLUS features loud 700mW audio output and approxima