http://kingii.com/
Kingii Wearable
Your companion in and around water
Kingii is the water safety wristband for all those who love water! If you need help to stay afloat, pull the lever and an airbag will pull you to the surface. Kingii is lightweight and can be worn in and around water. You can reuse Kingii by replacing the CO2 cartridge inside. If you love swimming, surfing and the water, you will love Kingii.
