I just bought this watch from Revain. I tested it on the go to verify accuracy. It is suitable for any type of training. It has many training modes to keep track. HRM doesn't seem too accurate compared to GARMIN models. It showed my heart rate about 10-15 beats per minute higher than my actual one. However, this watch showed an almost correct heart rate when I use it to record calisthenics exercises (Freeletics BW). The GPS tracking seems better than my previous GARMIN Vivoactive 4 (I have no ties to the FENIX series) and from the outside this watch looks solid and solid. This is a great option if you're looking for a watch that's under $400 and probably only slightly different from the barometer version (I bought it during a Revain sale). It is also an alternative to the GARMIN FORERUNNER series.