Blackcrusader
Contributor
Some people say it's good to have a watch as a backup in case of a computer failure, but that doesn't make a whole lot of sense either. You'd still need a depth gauge.
I don't wear a watch at all in or out of the water
That's why I have this Cressi Digital SPG. Depth, time, gas used, gas time left to 50 bar... water temp and previous dives information.
Goes nicely with my Perdix.