Seiko 5 Sports watch repair

Beschreibung des Auftrags

Dear Ladies and Gentlemen,

Last year in November I had a traffic accident and since then my Seiko watch has not worked properly. I would appreciate if you would help me fix it. The clock is slow and stops after only a few hours, if you don't wear them. Normally the power reserve should be longer. I'm afraid the spring is damaged. In addition, the date display sometimes gets stuck between two days.
Since the watch was damaged in an accident, the repair will be covered by my insurance. So I definitely need an estimate.
Thanks in advance for your help.

Sincerely

Thomas H.. Baptist