Aquatec Scuba Horn Video Lights It's available in four sizes:

It's available in four sizes: Small

000mm HH waterproof/weatherproof

Mounts to all cameras with a standard 1/4-20 tripod mount and includes mounting knob

The Atomic Ti2 Octopus is definitely the ultimate Octopus - performing much better than most divers primary regulator

6" inflator valve for easy operation

Aquatec Scuba Horn Video Lights It's available in four sizes:This new AQUATEC Scuba Horn is very compact in size. Only the best quality component is used in manufacturing of the AQUATEC Scuba Horn. The loud resonating frequency generated by this horn can be heard on the surface over a 1km range. Features: Horn works on the SURFACE. Volume: Surface 125 130 dB.