hello I have a problem with my Seiko SPB245J watch. I wind my watch in the morning at 8 a.m. (approximately 20-25 revolutions). I wear it all day until 7 p.m. Earlier I noticed that it had stopped at 9 p.m… I don’t understand since according to the characteristics its charge reserve is 70 hours… is there a problem with my watch? Or am I not winding it up enough? thanks in advance