The ultimate key fob for boaters! When keys fall in the water, the Key Buoy self-inflating pendant opens up, releasing an air tube which inflates automatically. Within 30 seconds, your keys magically rise to the surface, and the 14 inch tube extends above the water line, allowing you to reach them easily. The orange color lets you spot them quickly. It’s buoyant enough to raise 4.2 ounces of metal objects. It is suitable for single use only, so keep a spare on hand.