Scuba Sonics - AquaSonic Underwater Alarm

what a waste of money and anticipation ... it is loud on land with the cover off ... but with the cover on underwater ... pathetic low volume ... maybe ... sometimes someone feels sorry for you and gives you a looksy underwater.i don't get it ... couldn’t they have tested this device underwater ... not in a bathtub or mini pool, but in actual open water ... then the performance would be obvious. Perhaps if the cover was made of some sort of metal the sound would be as loud as with the cover off, who knows ... all I know is that it's going to the useless crap pile cemetery ... the only good news is that I can still use the batteries for something that does do what it was designed for.

I debated on a one star. As a signaling device for communication, it might work well. As an attention getter, no. I seemed to work, but low in volume when I tested under good conditions...i.e. not an emergency, but one time I did need to use it when i was having equalization issues and could not continue to descend. Maybe 15ft away when was able to get it out and sound....nothing, no reaction. fortunately they eventually looked around, but i realized that this device does not really signal well for assistance.