Kenwood TK-3400U4P ProTalk Compact UHF 4 Channel Portable Two-Radio, Black, 2 Watts Transmit Power/Range up to 6 Miles, Wireless Cloning, Calling Alert, Internal Vox/Hands Free Ready Up to 250,000 sq. ft. (23,220 SQ. M) In Steel and/or Concrete Reinforced Buildings Up to 20 Floors In High-rise Buildings Internal Vox/Hands Free Ready Voice Annunciation, Time Out Timer Programmable Frequency Scrambler by Channel