This ultra-compact radio has an easy-to-operate icon/menu system that utilizes an oversized full dot matrix LCD that increases the size of the information being displayed. Measures only 3.9" deep for mounting flexibility in tight spaces. Capable of initiating a DSC distress call, the GX1400 also features DSC Test Calling and Automatic Position Polling. Programmable scan, priority scan, and multi watch. Noise canceling microphone. IPX8 submersible waterproof rating. NMEA 0183 connectivity. 25/1 watt transmit power. 6.14"W x 2.4"H x 3.94"D. 3-year waterproof warranty.? Meets ITU-R M.493-13 Class D DSC (Digital Selective Calling)? Separate Receiver for CH70 (Receiving DSC Calls)? Ultra Compact Case (6.14"W x 2.4"H x 3.94"D)? NMEA 0183 Connectivity? E2O Easy-To-Operate Icon and Menu System? Preset Key used to recall up to 10 favorite channels? Programmable Scan, Priority Scan, and Multi Watch? Automatic DSC Polling of up to 6 ships' GPS positions? DSC Test Call and Auto DSC Channel Change Selection? NMEA Input and Output Connections? Programmable Soft Keys? Noise Canceling Microphone with channel Up/Down, 16/S, and H/L power selection keys? NOAA Weather Channels with Weather Alert? IPX8 Submersible Waterproof Rating? 3-Year Warranty