This Rechargeable Wireless Floating Outdoor/Indoor Speaker uses the latest 900MHz Wireless technology brings you to free music outdoors/indoors in your swimming pool or bathtub.Portable design campatible with any audio sources such as USB,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!