Subwoofer Size: 6.5 Inches Internal Battery Support. Battery Capacity: 3600mAH. Box contents: 1 x Bluetooth Trolley Speaker/PA system, 1 x Wired Mic., 1 x Remote control, 1 x Charging cable, 1 x user manual..Pendrive/Sd Card/Aux/FM/Mic support,Compatible with DVD/PC and other Audio sources. User friendly & Sturdy withTrolley handle and remote for added convenience. Digital LED Display and RGB Lights function which is perfect for night parties..Independent Volume Control on top, 1 Wired Microphone to make announcements or sing along with the music playback in large spaces or crowded situations. Full control panel on the top for Adjustments and inputs..20W bass booster woofer delivering 2000W P.M.P.O powered by 3.7V inbuilt long lasting for 3-4 hours.Tronica pocket friendly Party Speaker for all ! "Not just nearly Music, But Really Music"