Here you can see Tech21's various products. They range from the simple I Band on the lower right to cases with rear covers, screen protectors, and belt clips. The yellow case in the foreground is the Submariner. It will protect your handset from an accidental dunking and will stay afloat if dropped in the water. Tech21 has products only for the iPhone 4 right now, but it will expand to other phones like the Samsung Galaxy S III in the near future.