My 7S26 test suggests about 14 hours reserve, much less than expected. I imagine a service is required. Probably will do more good than a winder that overcomes an internal issue.

Since I bought my first really good automatic watch in 1969 (Rolex Sea Dweller) I never owned a watch wider.
Then last week I bought this on Amazon Prime:



I use it a few times daily to keep the 2 other autos going while I wear the 3rd. Rotate, repeat. I like it.

Meh…most watch afficionados are very anal about accuracy. A typical decent mechanical watch like a Rolex or Omega gains or loses a few seconds a day. Meaning you are going to be unscrewing that crown and resetting the watch every every few days so why not just give it a good wind when you do.