Addendum:
Long-Term Test ...
nunmer have passed since the purchase 5 months. The radio ions are the clock properly. For accuracy, since the last time change, I can only say that the clock is running 100% synchonly to 2 other radio clocks in my household.
Comfort: There is a big clock but you can be more comfortable to wear than my old Promaster stainless steel that firmly stuck always on the arm when I was sweating.
I wear the clock also at work (physical labor) and the only traces of the clock are scratches on the adjustable ring (which is also only painted), no scratches in the glass and not a scratch on the bracelet
Even after weeks without sun the Battarie is full still 3/4 full and though I work indoors.
After a day on the window sill in the sun Battarie is full again.
Conclusion: I'd me the clock again to buy, if I do not already have
