My Ticwatch E arrived !
On 23-Nov-2017, I was wearing the watch, with my Golf Yardage App, testing in KSC golf course.
Accuracy is very good, ±4 yards.
Battery usage, 70% for 4.5 hours play, it is OK.
I will try to fine tune the GPS update frequency from 5 seconds to 7 seconds and test it next week.