Kingii is a compact inflatable worn on the wrist to provide safety in the water. The device can be quickly deployed to provide a person with a small floatation device in a matter of seconds. The wristband also features a compass, and when the inflatable bag is deployed it exposes a whistle that can be blown in distress.
The Kingii was invented by Tom Agapiades who is currently raising funds to bring his device to market with an Indiegogo campaign that has already exceeded its goal.
via Damn Geeky