Ok, but not reliable
This is my 4th Suunto Core in 3 years. I've been impressed with the altimeter and barometer as compared to my previous alti/baro watch (Highgear), though the logging function does not work as well as the Suunto Vector. While the watch is functional, I would give it 4/5 stars, because the style is great and it is still surprisingly accurate if calibrated properly. However, the watch has continued to break. I've broken the watch's face from a light impact while climbing. The other times have been because when the battery is changed it has either stopped working entirely or eats through new batteries every week. This watch was the tool of choice for many guides whom I work with and I've unfortunately heard of the same battery issues a multitude of times.