I’ve got a cheap Seiko 5, the SNK809. Bought for $50 new in 2013, wore it for a few years then it moved with me in drawers for the past 5. I pulled it out last

I’ve got a cheap Seiko 5, the SNK809. Bought for $50 new in 2013, wore it for a few years then it moved with me in drawers for the past 5. I pulled it out last week, wound it up and it works perfectly, gaining just 4 seconds a day.