OtterBox 'Defender Series' Case for Apple iPhone 4 and iPhone 4S - Retail Packaging Black (Ion Intelligence) Dust Protection: Sealed port covers stop dust, dirt and lint from clogging your jacks and inputs. Screen Protector: Built-in, ultra-clear membrane guards the touchscreen against scratches and scrapes. Scratch Protection: Device stays completely covered to keep it looking as new as the day you got it. Drop Protection: Three materials work together to absorb and deflect shock away from the device. Port covers keep dust and debris out