iGills is a special iPhone case made from polycarbonate, and this case will make your iPhone waterproof up to 40m. This case is perfect if you want to record underwater video, but unlike other waterproof cases, with iGills you can use your touchscreen thanks to the front buttons and iGills dedicated app. In addition to camera, iGills app can also keep track of your depth, time underwater, nitrox levels and temperature of the water thanks to the built-in sensors, and you can even program it to alarm you about your oxygen supply levels.
iGills is a perfect case if you’re interested in diving and you want to record your diving session with your iPhone. As for compatibility, this case is compatible with iPhone 4, 4S, and 3GS, and it is currently priced at $329.99.