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. Rechargeable Lithium ion battery lets you enjoy your music anywhere (USB charging cable and USB AC adapter included). IP67 rated waterproof and dustproof. Rugged shockproof cabinet made to military spec standard 810. USB port to charge mobile devices. Color: Black/Grey