$10 - $100
Waterbuoy
Messing about on the water is all well and good, but dropping keys and other valuables in the drink is no laughing matter. Because once they plop below the surface of the big ol' briny, you're scuppered. Or are you? Well no, not if you've attached your bits to the ingenious Waterbuoy. This clever little device contains a high-strength rubber balloon that can lift up to 1Kg and automatically inflates within seconds of hitting the water, causing the whole shebang to rise gently to the surface. And thanks to a high-intensity LED beacon that's visible from over 250m at night, you can spot it bobbing about and retrieve your keys/valuables with ease.
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