M424G delivers superior performance in a compact package and features Icom's most intuitive user interface. M424G is the world's first fixed-mount VHF with active noise canceling and Class D DSC. The active noise-canceling software quiets background noise by up to 90 percent on both outgoing and incoming calls. Featuring smart touch soft key human interface, built-in PA, AquaQuake™, IPX7 waterproof rating, and direct compatibility with Icom's MA-500TR AIS transponder and the new CommandMic IV™. Channel Selection: Up/down keysMic Controls: Channel up/down, Hi/low powerDisplay Type: Dot matrix LCDDual/Tri/Tag scanningClass D DSCWeather AlertReceiver Performance: Sensitivity: 0.22µVRejection: 70dB