Customer Reviews for Garmin - Descent Mk3 Watch Style-Dive Computer, 43mm, Steel with Fog Gray Band - Silver - (2025)
Customer Rating
4
Great features!
on October 16, 2026
Posted by: bestfwen
I bought this a month ago because the battery life on my Descent Mk2 was really starting to fail. I love most of what the Mk3 can do. I just wish the battery life was longer. I personally feel like the screen either A. Doesn't detect my wrist gesture sometimes, or B. doesn't like to be on because I have had dozens of times where I want to see the time and I literally cannot because my screen is off since I'm trying to save the battery. It has been frustrating to say the least but it is quite a beautiful watch and it has some very awesome features. And yes, I already googled all of the battery saving options for the Mk3 and have applied them and my watch still only lasts 3-4 days max even though the watch itself says differently (like oh, you have 7 days worth of battery life, and then I watch as it goes down to 5 days battery life in one day after doing one activity). I do love the additional information it gives me and the morning message though. If you're on the fence, I would say that it is a spectacular dive watch! I just wish the battery life was longer but what can you do. It's still the best dive watch out there.
I got them 43mm Mk3 because I have small wrists and wearing big watches looks weird, but I regret not having the backup dive light, and I have heard the battery lasts longer, that is my biggest complaint the watch advertises a battery life up to 10 day, the longest i have gotten out of it is 4 days. I am an active guy but not that active, if someone responds with you have to turn off fhe back ground feature, that is stupid why buy a tech heavy watch and not use the tech. Garmin should just manage expectation and say 4day battery life.
Response from GarminBy Care, September 18, 2025
Thanks for the comment! If you have always-on mode enabled for the backlight, the battery expectation is 4 days, which is stated in the specs of the product page. However, if you don't have that feature enabled and you're only getting 4 days, there could be a variety of factors contributing to the battery drain, including Connect IQ app use, Pulse Ox use, GPS use, or outdated software. The following FAQ discusses these and more in detail: http://ms.spr.ly/6423sWUXx
If you're still needing help after that, I recommend calling Garmin Support at 800-800-1020 to speak with an associate about these concerns. *KC
I received this watch as a gift. I'm primarily a runner and backcountry skiier, with zero diving experience. It seems great but not perfect for my uses. To summarize:
Pros: touch screen is great, mapping features and apps seem to be a big step-up from the forerunner 255 I had been using. Screen is crisp and bright in most conditions.
Cons: the weight and fit cause some rubbing on my wrist during running. Battery life seems to be roughly the same or worse than the Forerunner 255, and the screen sometimes fails to wake up on gesture detection (minor nit).
Ultimately, its great, but for very long runs or backcountry adventures It isn't ideal. I think if I were a diver, I would appreciate this watch much more.
After reading and checking on multiple facts of great features of different lines of Garmin smart watch, I decided to take it one step and buy the watch.