Battery : Yes Number of Loudspeaker Enclosure : 3 Audio Crossover : Full-Range Woofer Size/Full-Range Size : 2", 5" Waterproof : Yes Communication : AUX, XLR, AES/EBU Input, Coaxial Input, RCA,USB, WIFI, HDMI, NFC, Optical Input, RJ45, Audio Line, bluetooth Speaker  Type : Subwoofer Output Power : 15W Remote Control : Yes Cabinet Material : Plastic Display Screen : Yes Use : HOME THEATRE, Portable Audio Player, Mobile Phone, Karaoke Player, COMPUTER, Stage, Outdoor, Party Special Feature : Wireless, PORTABLE Bluetooth Distance: 10M Sensitivity : 350+/-10% mv Frequency response range : 40Hz~18KHz