This Descent MK1-watch from Garmin is designed for divers. The functions are all the way on them adjusted.
There are a compass, gyroscope and barometer. Also not unimportant is that is being kept on how much oxygen there is. On a digital card, it is thanks to GPS to see where exactly hiding.
By shaking gives the watch o.a. in time, it’s time to get to the top. All the statistics are finally compiled in a log, to be found in the corresponding smartphone app. Don’t be scared of the price, which is 999,99 euros.