Hi, lately I've discovered that my Fitbit Versa is not very accurate when it comes to measuring the pace/km. When I was your walking with a friend his smart whatch showed 9:55/km which is the normal pace when we're power walking. My Versa showed the pace 12:16/km.
A couple of days later I was out jogging and started two apps on my mobile phone to compare with my Versa. Ser attached image? Why this discrepancy?