Nady WA-120LT/N Portable Wireless Public Address System with Lavaliere Mic Built-in wireless microphone receiver, 20-watt amplifier, 2 input jacks and 1 record out Treble, bass and built-in echo reverb controls Dual power options with either 8 D batteries or AC power Dimensions: 10 1/2"W x 8 7/8"H x 5 7/8"D Includes wireless speaker