Description: SIM Card Slot opened.You don't have to unscrew the case if you need to switch SIM card. It protect your device from scratches and give unique look. It also cover up scratches if you already have. Easy access to all controls and ports . It is easy to install，just snap on !#!amp!*!amp; off. All the openings in this case are precisely cut for buttons and connectors to get full access to all functions. Material: Aluminum Color:Black，Silver Compatible with: Apple iPhone 4 4S Package includes: 1 x Aluminum Metal Bumper