DevonDiver
N/A
Most open water, courses are now taught using dive computers. The old video (must be old if you 'stumbled' across it) shows the older approach - watch/depth gauge and tables.
You can get an entry-level dive computer for around the same price as a decent, dedicated dive watch.
IMHO, you need something rated to/beyond 300m depth to be sure it is 'waterproof' for diving.
If you want something to wear for both diving and non-diving, then look at the range of watch-sized dive computers. They cost more than the hockey-puck sized dive computers, but provide the same functions (and do more to display your diving interests than a dive-style watch would, if that's a consideration for you).
There's normally a healthy market for second-hand dive computers; so eBay and Craigs List are a good starting point if you are on a budget.
The only reason I wear a watch for diving now is because I want a 'second hand' for precise timing. That's an instructor/technical thing... and isn't a necessity for most divers.
You can get an entry-level dive computer for around the same price as a decent, dedicated dive watch.
IMHO, you need something rated to/beyond 300m depth to be sure it is 'waterproof' for diving.
If you want something to wear for both diving and non-diving, then look at the range of watch-sized dive computers. They cost more than the hockey-puck sized dive computers, but provide the same functions (and do more to display your diving interests than a dive-style watch would, if that's a consideration for you).
There's normally a healthy market for second-hand dive computers; so eBay and Craigs List are a good starting point if you are on a budget.
The only reason I wear a watch for diving now is because I want a 'second hand' for precise timing. That's an instructor/technical thing... and isn't a necessity for most divers.