Also, it seems to have the occasional issue syncing data to Strava, for example my last run on the watch is 2.9 miles, whereas when uploaded to Strava it is 1.9 mile.

I find that it sometimes takes quite a while to locate the GPS signal and a few times during a run it loses the signal which results in bad run data.

and I lost all my data

Fear not as I have found a solution

when it arrived and to work as if new, at this price, it was and is definitely a steal