iPhone 4 Phone Case, Bastex 3D Cute Baby Pink Penguin Silicone TPU Case Cover for Apple iPhone 4, 4g, 4s, 4gs Durable and shock absorbing for maximum protection Creative Style, nice fitting Check the power status at a glance with an integrated 4-light LED status indicator. Know before you go! We can provide custom phone cases with any design for you. If you want, please contact us! Integrated power switch allows you to switch on/off the battery case. Only use the battery when you need it.