The Suunto Core Wrist-Top Computer Watch works great for me. i would advise not to scan to abundant into the opposite reviewers who have said unhealthy things concerning the watch. Heads up guys when the weather changes and you come back to a ref point; say home when returning down from the mountain the watch may show a different alt. if the pressure and temps have changed lots. , thats the means it works as pressure changes thus to will your base alt setting. unless you have got the GPS version 
I recommend people scan the book before talking and sounding silly. The Core is a great add on to my collection. I actually have the GPS version yet. This watch is a bit slimmer and not thus G.I. joe looking. sensible for on the trail or down city.
UPDATE: The watch has started acting up solely when 8 months of daily light-weight use. The mode buttons work some days and not others. The TL and BL
mode buttons all of a sudden clean up. i am guessing the alignment with the pins you push and the contact pad inside the watch get miss matched. Really? For 200 dollar watch and i cant get the easy stop watch to figure. If I flick it with my finger it realigns keep a copy and them i am able to use the buttons. simply yesterday I got on the tread mill to start out my Cross match compute and commenced to sprint; I hit the start button again and again and again, &*(^% guess sick use the free clock on the wall. Suunto has to do better than this before I buy another watch from them. cannot belive i am looking at G-Shocks now!! Oh and the cowl on my GPS watch has come back off yet. Not wealthy Suunto!! ONE STAR now