Rock Light Tube Series Bumper Case Clear Rear Cover for Apple iPhone 6 - Grey LED flash when there is an incoming call. The Rock Light Tube Series case has a unique and cool feature. The sides of the case flashes lights when there is an incoming call for best effect. Flash is based on iPhone LED alert setting. PolyCarbonate (plastic) shell + PC outer frame Cutouts allow use of all essential buttons and functions of your phone Drop-resistant protective case, Minimalist and Stylish Blue, Navy Blue, Light Green, Gray and Gold Colors