This Rechargeable Waterproof Wireless Floating Outdoor/Indoor Speaker uses the latest 900MHz Wireless technology brings you to free music outdoors/indoors in your swimming pool or bathtub.Value-added USB port can play MP3 music directly.18''Cushion around Body with 3.5mm audio jack is campatible with any audio sources such as i-Pod/i-Phone,Hi-Fi,CD/MP3 player,VCD/DCD/BluRay player,Computer,Radio,TV or VCR.Easy installation enables you to enjoy high quality sound in minutes!