DS18 MB-NV15BAT 15-Inch 2-Way Battery Powered 2,000-Watt Active Speaker with 2 Microphones/EQ/BT/MP3/USB/SD and FM Radio 2-Way Active Speaker. Built-In Rechargeable Battery. Compression Driver with 1" Diaphragm. 15" Woofer, 2" Coil, 40 Oz. Magnet. 3.5mm Aux-In Compatible with All Digital Music. Includes 2 x VHF Wireless Microphone, Remote Control, and has built in Equalizer, MP3/USB/SD/Bluetooth/FM Radio Capabilities built in. Mic Input: 6.53 mm Jack and 2x VHF Microphones. Line Input: 2 x RCA or 3.5 mm Aux. Line Output: 2 RCA Power Max: 2,000 Watts. Power Voltage: AC 115V & AC 220V. Integrated 35mm Speaker Stand Mount