Divemarine tank knocker, underwater noise maker.
A special system makes it the ideal tool to be heard when necessary.
Divemarine Shaker with lanyard.
A special magnetic system makes it the ideal tool for getting heard only when you need.
Shaker with magnet and clip acetal
Shaker with magnet, coil clip and carabiner steel 70mm
Warning buzzer diver with standard metal hose connector jacket
And obtain 5 euros;of discount on your first order.