If you don't wear it that often, you have to get it going each time you wear it. With an automatic that also hand winds, you just give it a few winds, set it, and strap it on. With one that doesn't, you end up wiggling the watch around a bunch before setting it. (r/Seiko)

In reply to a post on r/Seiko:

If you don't wear it that often, you have to get it going each time you wear it. With an automatic that also hand winds, you just give it a few winds, set it, and strap it on. With one that doesn't, you end up wiggling the watch around a bunch before setting it.