[Foto und RMA-Form per email 26-01-16]
I've got an issue with my PIONIER Miami watch.
The "Day" on it suddenly can't be adjusted.
It's stuck between "Saturday" and "Sunday".
Previously it was stuck at "Saturday". 
The next day the needle suddenly was pointing at "Friday".
I've tried the "Day Setting" button but unfortunately it only moves the needle to Saturday then going halfway between "Saturday" and "Sunday" and stops there until today.
No matter how I press the button after that the needle won't move at all.
{G-Karte}