Standard Horizon HX370S is smaller, Lighter, unique functions, and built to take the day in punishment of the marine environment. HX370S Marine and 40 commercial LMR VHF (dealer programmable) channel capability, Unique SOS distress beacon and speaker mic and voice scrambler capable. Standard HX370S has the capability to be programmed to scan any number of channels with other without priority to channel 16 also includes Ch16 Dual Watch and NOAA Weather alert. The PRESET key allows you to easy recall 8 of your most used channels. An oversized LCD has channel names to inform you of the use of each selected channel. The high intensity strobe light emits the internationally recognized SOS signal that can be seen over 1 mile away at night - another Standard Horizon first! Standard Horizon HX370 S Includes 1400mAh Nickel Metal Hydride battery that will last over 18 hours (5/5/90 duty cycle) when transmitting at 5W Waterproof alkaline battery tray Includes 12VDC & 110VAC overnight charges with drop in base, Submersible Alkaline battery tray and belt clip. If your Standard Horizon HX370S ever fails for any reason including water damage during normal use in the first three years, STANDARD HORIZON will repair or replace it free, without hassle or charges - period!