The Uniden UH850S 5 W UHF Waterproof CB Handheld Radio handheld radio is the ultimate compact UHF communications with 5 Watt power and deliver up to 17km# of range. This makes it the perfect unit for professionals who need a rugged and heavy duty radio suitable for various conditions. The latest innovation added to the Uniden UHF range, Master Scanâ„¢ technology, is designed to ensure minimal disruptions for continuous communication and offers users to seamlessly communicate on a group of channels. If your current channel is interrupted by outsiders, all radios in your group will automatically jump to a new clear channel allowing uninterrupted communicate to continue.