Easy to Use: you need to attach the tank banger to your diving gas cylinder, then grab the ball and pull it away from the tank; By tapping the diving tank, you can make a sound and easily attract the attention of your companions
Fine Workmanship: the underwater signal device is mainly made of quality plastic and rubber, which is wear resistant, reliable and serviceable, allowing you to use it with confidence for a long time
Wide Applications: our diving tank accessories can be applied underwater for a long time; By tapping the submersible tank to make a sound, they can get the attention of your mate and others without scaring the fish