Good question, I didn't even think about it, I also bought the Fitbit 2 because my Fitbit Ones got wobbly contacts when charging after about 2 years and the band broke after about 1 year.
I'm very happy with the Fitbit 2. Do you want to sync the Fitbit 2 via Bluetooth on the PVC?

Basically with Bluetooth. Fortunately, the question has been settled for me, as my Fitbit One was found yesterday. However, I find it a shame that most of the accessories for these devices are not compatible with each other and everything has to be bought anew every time.