If you’re looking for an underwater noisemaker, maybe you want check out the SCUBuzz, an underwater signaling device worn like a wristwatch. Sold as a pair, the SCUBuzz is a two-way ultrasonic radio transmitter/receiver that connects two people – even if one is on the surface. To buzz your buddy, press the button and it signals the person (with vibrations and lights) wearing the mate to your pair. I’m not sure I’m crazy about the vibrating and the lights – I’d probably have a heart attack when I got SCUBuzzed the first time! – but I do like the idea of not wondering whether the rapping I hear is my buddy, someone else’s buddy, or the gills of the fast-approaching shark. A pair of SCUBuzzes retails for $300.

Related:

Underwater Noisemakers

Whistles for Scuba Diving 

[Via X-Ray Mag]