Features: 1. LED light flashes/blinks in six alternative colors for approximately 15 seconds then goes off when making or receiving a call or sending or receiving a message 2. Protects your phone on sides and back from scratches and dents 3. Designed to best fit for your phone 4. No interference with your phone buttons ports or connectors 5. One 3V lithium battery (CR2016) is included ( Please note: the negative side is up when push it into the back cover); can be replaced when used up.