I just bought two (one for my wife and one for me) and even after the December update, the steps do not measure well. You have to move very markedly the arms to detect steps … even in walking mode, in 3km I counted 900 steps and should be at least three times… We are looking forward to an update to fix it because the watch is amazing and it is perfect to be able to do activities and monitor our daily life with our dive watch.