Best route regarding slow watch - Watch Repairs Help & Advice - Watch Repair Talk
Vintage Seiko 5 Automatic Movement No 6309 Men's Wrist Watch Running Order | eBay
I have a Seiko 5 automatic watch that runs about 90 seconds fast every day. How can I get it adjusted? - Quora
Seiko 5 losing time very fast | EDCForums
Discussion] I finally managed to regulate my cheap Seiko 5 SNK809 to near-perfect timekeeping as a complete beginner! Beginner tips in the post. : r/Watches