Pros: ergonomics, aesthetics, strength, cardio ANT, GPS accuracy even in the woods, calorie computation, Garmin software, Touch Dial, wifi The -: improved: 8h Autonomy, standard seal, start / stop button and lap / reset too big tend to stop the stopwatch when bent wrist too (eg if one using hands in significant elevation changes !), ditto for the lock screen by simultaneously pressing both buttons ... may stop the clock! rapid oxidation of the charging contacts in the casing of the watch despite maintenance. General opinion, great product that I recommend.