The iHome iBT374 is a waterproof portable Bluetooth stereo speaker system with speakerphone that connects to a Bluetooth device for wireless audio playback. Five color changing modes with multiple colors at the same time for fun, fabulous color effects. Wireless stereo capability lets you connect 2 units for real stereo. Rechargeable lithium-ion battery lets you enjoy your music anywhere. Includes aux-in jack to listen to any audio source.