Sold at Auction: Gentlemans vintage SEIKO SQ 100 Quartz wristwatch finished in silver tone with stainless steel bracelet. Day/Date model with sweeping second hand. Working when tested. Excellent condition for age.
Seiko+Vintage+Blue+Unisex+Adult+Watch+-+SQ100 for sale online | eBay
Seiko SQ Sports 100 - how to service - Watch Repairs Help & Advice - Watch Repair Talk