Cancer Zodiac Constellation LED LCD Sense Flash Light Case Cover for Apple Iphone 5 5s Hard Plastic Shell Back Skin + Free Gift (Second Battery) USA Shipping - Fast Delivery When you receive/transmit a call or text the LED Light flashes/blinks approximately for 15 seconds in six alternative colors (red, orange, pink, purple, blue and green) It is made of rigid plastic, very light weight, protects the back and sides of your phone Does not prevent access to screen or buttons on your phone Make sure the negative side of the battery is up when inserting in the case, peel the protective tape at the back prior to using