Tough Aluminum Cast housing with color changing LED chips. Super bright light with over 2 million color combinations. Control with any Bluetooth connection on Smart phone. Connect in seconds. Pick a color, run a program of colors, or play music to change colors. Compatible with any LED Bluetooth controlled light.. Daisy chain design: 2 lines out (front and rear), expandable (up to 10 modules). 30% brighter than original Rock Lights w/better dispersion, slim module only .5 thick.