Comment by peterleiser

I agree completely! Our Garmin Descent Mk3i dive computer smart watches are the best watches I've ever seen. They just work. You can charge it for an hour or so and it's good for 25 days. I hated having to charge previous watches every day. It has a double-tap light on/off feature with a very bright LED, four light levels, and a red light mode. It automatically starts tracking my dives and is rated to 200 meters. It can also do diver-to-diver messaging, air tank tracking, and group tracking using subwave sonar. And it has all the normal pulse ox, heart rate tracking, step tracking, sleep tracking, and smartwatch stuff. Just don't enable the one touch kill-switch ;-). Apparently it's a feature for military divers to erase their data (but sounds like a marketing gimmick).