Chuckitall
Contributor
I've used this device for underwater signaling for years, just a great sound underwater that buddies or students can hear. Anyway mine is shot and parts are no where to be found. What's out there that works just as well. All the reviews on the newer types of underwater sound devices are basically very poor. I don't care about the double above/below devices they are crap. Is there anything the compares to the old Mini Hammerheads. Nobody hears tank banging anymore.