Freedive with a detached Oceanic Pro Plus 2?

I have the Pro Plus with the quick disconnect. Does anyone know if it's safe to detach it and use it while freediving? I just want to know how deep I'm going and I don't want to pay for another dedicated wrist computer.

The quick disconnect itself when hooked up to the hose jostles around a lot and doesn't seem particularly watertight, which makes me think that the computer by itself is completely watertight. I mean, how does the computer even read the tank pressure? I would think it doesn't really need to let any air inside it - the air just hits up against a sealed pressure plate or something, so even if disconnected from the hose the computer should still be completely watertight, right?

I've used that way and there were no problems. The computer worked fine later. It did die a few years later, but I think that was unrelated. Your results may vary though.

Dan