Ipx8 ratings on mp3 player exeze WMR means Gadgets can be used while submerged continuously. Equipped capacity of 4 gb and special earphones for use in water, exeze WMR allows you to listen to 1000 songs while swimming. Certainly useful to fight boredom when (eg) you're swimming across the Sunda Strait.
Laser pointer
Need to give a presentation immediately after the tsunami? Then you need a laser pointer waterproof. Jetlasers (rating ipx8) has many types of lasers and laser pointers high power waterproof. Type its top is made of titanium, hold the fall of 2 meters, and can be used continuously while submerged in water. The only problem is where to get a projector that is waterproof?