Celio New Samsung Galaxy S4 Waterproof Superproof Dirtproof Snowproof Shockproof Case for Samsung Galaxy S4 (Blue) Water test case prior to installing phone Water Proof: Fully submergible to 6.6 feet / 2 m Dirt Proof: Sealed from dirt & dust particles - meets or exceeds IP-69 Ingress Protection Rating Snow Proof: Sealed from snow & ice - meets or exceeds IP-69 Ingress Protection Rating This case can protect your phone against the water and dust . The Samsung Galaxy S3 is totally sealed when you use the phone case , so the Call Quality has some disturb based on the Galaxy S3 contruction during your phone call. If you want to have the perfect sound quality ,phese use the headset with headphone adaptor and keeper.If you are in pursuit of perfection , plese do not buy it ! Thank you for your understanding.