ELECDAY Gorilla Glass Waterproof ShockProof Dirt Snow Proof Case for Samsung Galaxy S4 i9500 (YELLOW) All microphone and speaker vents are waterpoof, featuring ClearVoice clarify technology.. Sound Enhancement System improves audio quality.Not fit for S4 Acitive and S4 mini Fully sealed from minute dust particles.No Singal reduce. Protected against water immersion up to 1 meter (3.25ft.) for 30 mins CrystalClear anti-reflective optical glass lens for high quality image. Waterproof up to 3.3ft ( 1 meter ). Case meets to IP68 rating. UltraFlat screen protection ensures full screen functionality.