5770 Tool?

[Little Jo]

Does anybody know, that this little item (30 60 5330, left bottom) held by the diver in her right hand is for?

The other items from the 30 60 5330 seem to be quite clear to me: two diver's watches/instruments, the flash, but what is this pistol like handheld item for 

[playmofire]

Maybe some sort of sound magnifying device?

[Little Jo]

Maybe some sort of sound magnifying device?

A sound pistol (to scare off bity fishs)? Hm, could make sense. Does something like this exist? Anybody knows?

[playmofire]

A sound pistol (to scare off bity fishs)? Hm, could make sense. Does something like this exist? Anybody knows?

Ah, I was thinking the other way round - a device to magnify the sounds made by fishes for recording purposes, although that has the problem there doesn't seem to be a recorder of any kind.

I think you're probably right with your interpretation.

[Argand]

Hello, it is not appraised well, but it seems a lantern and a submarine camera with flash unit, like Nikonos V

Camera page
System chart

[Argand]

You consider that the own water amplifies much the sound. A sound that is generated to kilometers seems that he is very next

Seeing the images it seems that the 4 elements that are mentioned are the clock, depth gauge, lantern and head of flash

[Argand]

It would lack the pressure gauge, but it is not indispensable if it is had an air bottle with reserve

[arab warrior]

In my opinion Argand is right, it is a underwater flashlight.
It apeared already in an older set 3807 from Antex (page 249 first collector)

[Argand]

To view some equipment
A torche

[Argand]

See