How is it that steps are recorded on Versa 2 for three days before I purchased the device?

[MJRV]

I bought my Versa 2 on Saturday 28 December and set it up within 20 minutes of leaving the store, while I was in the store car park.  

Mysteriously, the Fitbit app is showing that it registered steps on every day from Tuesday 24 December to Friday 27 December, ranging from 1,267 steps to 10,637 steps.  

How can the device have recorded these steps before I registered the device? 

[SunsetRunner]

Hi @MJRV , maybe you received a second chance product which was not Factory Resetted properly, Regards kuzibri

[MJRV]

Thanks - while your answer makes sense.  It does not really fit the facts, as the packaging was all intact  and there were no indications that the watch had been removed from the packaging.