... Dirt-proof Snow-proof Shockproof quality warranty waterproof case for iphone4 4sFull Waterproof IP-68 ProtectionThe LifeProof™ case has ... glass can cause the mobile phone glass to shatter.Dirty Jobs or Construction SitesFarming, demolishing structures, mixing of cement, sawing ... your device as a GPS, performance monitor, for emergency communications, camera, or for other uses when you hike, trail-bike, ...