taking apart a Seiko 5Y23 - Watch Repairs Help & Advice - Watch Repair Talk
Seiko Watch Movements | Caliber Corner
Seiko Caliber 5Y23A Watch Movement
Makszy's view on horology - Accuracy and Development - Seiko caliber
Anyone know a good replacement movement for a Seiko SQ Day Date 5Y23-8A11? The original movement (5Y23A) is long since discontinued. Thanks! : r/watchrepair
Seiko quartz spare parts - Watch Repairs Help & Advice - Watch Repair Talk
Bringing my Grandad's (RIP) 1992 Seiko Quartz 5Y23-7089 Back to Life | WatchCrunch