Wireless PA Speaker System, Band Type VHF, Number of Channels 1, Material Polycarbonate, Height (In.) 5 in, Width (In.) 7 in, Depth (In.) 9 in, Impedance (Ohms) 8 ohm, Interference Eliminator Code 153, Battery Type NiCad, Antenna BNC Flex, Power Requirement 110 V AC, UL Listed and Meets FCC Standards, Includes 25 ft Cable, Compatible Portable 2-Way Radio, Flex Antenna, Mounting Brackets, PA Horn Speaker, Phono Connector, Portable 2-Way Radio, Radio Receiver, Rechargeable Back-Up Battery Pack