A 4 channel, 2 watt, 56 UHF frequency Walkie Talkie Radio with a range of up to 250,000 sq. ft. and up to 20 floors. 15 Hrs Operation; NiMH 1500MAH Battery - 3Hr Charge and Low Battery Alert ; VOX - Voice Activation; Two Color LED; Diecast Chassis/Polycarbonate Case; Weather Sealed Construction; Super Lock; Channel Scan; Wireless Cloning Mode; 2-Pin Accessory Plug.