Wireless PA Speaker System Band Type UHF 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