A:Answer If this one does not fit the Versa 2, it is not the FB171RCC, I had to get a new versa 2 the only one that fits has a specific Obverse side known to Fitbit. my old charger did not fit but the one I listed, above does. The Obverse (or underside) is NOT flush with the sides, it is just over 1/4 inch deep from the bottom of where the pins engage the Fitbit. the connection for the charging cord is light grey in color, and has a clip to slip the side of the wrapped cord into it. IT IS DISTINCTIV, different from the original charger before the changes were made. I've had both chargers, The original one with my first Versa 2 will charge the first Versa 2, the new Versa 2 came with the new Charger, the original charger WILL NOT charge the new Versa 2, and the new charger will not charge the original Versa 2.
BELIEVE ME.....I'VE TRIED , Original charger will charge original Versa 2, new chrger will charge new Versa 2,. YOU CAN'T CHARGE IF YOU DON'T HAVE THE CORRECT CHARGER.