User could easily replace the battery with a coin to open the steel caseback.
It is important for the user to change the battery on their own, in case of flat battery during the adventure trip.
The model of the battery is clearly marked for easy referencing.
The chamfers at the end of the strap should be increased for easy insertion into the wide strap-loop
taking into consideration of the friction between the rubber surfaces.
A few pictures of the popular Black ...
Note it is not all Black...the buttons and the prints are in different colours.
After taking all these pictures, I like the finishing - burrs were removed and no sharp
edges (from the mold parting line) which are inherent from plastic injection molding.
Hopefully this quality attribute is applied for production quantity later.
If the WS4 is to be worn without any gear, the lug to lug distance could be a disadvantage for small wrists.
Note the distance unstretched, is about 56mm.
My wrist is about 56mm wide, and the WS4 seats comfortably.
It is light, specs indicated the watchhead only weigh 90 grams.
Now, for a much smaller wrist ( my friend's wrist ) and strapped to the last hole ...
still left too much space, and the WS4 becomes a bangle and rotates around.
So the WS4's design may have left a segment untouched.