Galaxy S7 Case, Pandawell&trade; [Crystal Clear] [Incoming Call Flash] Blink Hybrid Soft Transparent TPU Panel + Purple Luminous Bumper Cover Case for Samsung Galaxy S7 Dual-layer cover- Premium PolyCarbonate (high quality plastic) shell + PC outer frame for extra protection Using the Phone's built-in LED flash, th LED Flashing Case diffuses the light throughout the case, illuminating incoming notifications such as calls, text messages, etc Ultra Slim and perfect fit with a clear back part The color of light will change in according with the color of background. If you want the case show different colors, you need to put Phone on the desk at the night or the dark place. In the day or in the bright place it can only show the original light color. Crystal clear back panel retains your original Phone looks