Made by Seiko Kameido Factory 2220-0180 Manual Winding Regarding timekeeping, I feel it's within a 1-minute error over 24 hours. ○ Diameter: Approximately 33mm, Thickness: Approximately 7mm ○ Lug width: 18mm ○ Belt size: Free adjust As this is an antique used item, we cannot provide any support for issues upon arrival.