The accuracy of the watch is absolutely terrible and it's Bluetooth connection even worse! A 20km cycling track on Google maps comes up as 10km, 13km and random other numbers, a different one every time I bike on it. This is mainly because the watch keeps losing its connection to the phone.
The GPS is all over the place with calculation as well. On my 5km run, it's always come between 3.2km and 3.9km but never shown the full track, even put my starting point almost a km after I actually started running.
My phone connects to all other Bluetooth devices at home except for the app. It is always just looking for the tracker, barely ever finding it to sync. The tracker too is horrible at connecting to the phone when you try so for runs and bikes.
Really disappointed with this within 10 days of purchase. What's the point of spending $150 on something that doesn't do the bare necessary of what it's meant to?