[Jon]

I wouldn't be too worried about spooking fish with the transmitter waves from the unit. Many of the new dive computers use wireless transmitters to send tank pressure info to the wrist unit and it doesn't scare fish- I used to have one and never had a problem.

As far as sending a signal to your buddy, it could be done. I remember seeing a unit a few years ago that could be carried by a dive instructor. It had read outs for all of the students depth/time/tank pressure. It was a little bit bulky , but that's because you could have a whole class full of students information read out on this device.

In the end I think it was just too expensive so it never came to market. That's what I would be affraid of with the vest- too many things added in that would put it's price out of reach for the average freediver/spearo.

I'm still interested ona release date/price of the unit as I see it as a must have for the much of the diving I wish to do in my area. Since it only goes to 120' it doesn't have much of a use for competition, but there are other systems already in place for that.

Jon