Amplivox SW222 Wireless Portable Buddy Public Address System, Black Audio Portable Buddy with Wireless Microphone. Audience Size: up to 1000 people. Power Options: 10 D-Cell batteries. Warranty: 6 years electronics. Product Dimensions: 11"H x 13.5"W x 4.5"D. Product Weight: 4 lbs without batteries, 8 lbs with batteries.