Review on Gray Sapphire Garmin Descent Mk1 Dive Computer, Watch-Sized with Surface GPS & Fitness Features, Includes DLC Titanium Band by Jason Caldwell

I tried to test this watch on several mountain hikes, unfortunately I didn't have an accurate result even in altimeter mode, the Garmin MK1 measures almost 5-10 percent less than expected. at the top. I also tested 4 times in immersive mode, which drives me crazy in calibration mode the first time. Because this mode locks the entire system for 24 hours if you accidentally set it during a deep dive. The single gas mode and other functions of this dive computer are fine. Of course, I haven't tested all of Garmin's actions yet.