Amazfit Watch faces

A few days ago my wife and I went on a walk. I recorded the walk on my watch and I also recorded it on my phone (with the wikiloc app). My wife has a Fitbit without GPS, but when she recorded the walk the Fitbit app on the phone uses the phones GPS to record.

Anyway, what I noticed is that both the recorded distance on my phone and my wife's phone+Fitbit where about the same.

My walk was 5,15 KM and her walk was 5,14 KM. So about the same.

But my watch came with 5,64 KM, that's a pretty big difference. So how accurate is this watch anyway. I this difference on multiple occasions.

With the Bip S
I just did a Triathlon training session last sunday.

First time using it.
for the Open water swim.. it is VERY poor.. Swimming in straight line but the GPS data show ZigZag... refuld in almost Double the distance.
As for out door bike and running, the GPS is spot on. (at least it show perfect route on the Map)

is quite disappointing... as the only reason i upgrade to Bip S is because of open water.


I had a question which i could not find anywhere online.. (my be Bip S is not popular)
for indoor bike, any one know can we connect a bike computer to Bip S?
for data tracking purpose.

the accuracy is pretty bad... so i like the Bip lite, which is 5 ATM water R. it is more useful.