Serviced, 1971 Seiko 5 Actus SS 25 jewels automatic watch in good condition. Flawless, hard to look away from, vibrant blue dial. Case has some small nicks and scratches. NOS Genuine Seiko acrylic crystal. New Seiko cowhide leather strap. Caliber 6106C is the same base caliber found in 61GS. It's fully automatic, no hand winding, with hacking and push of the crown calendar quick set. Short quick push changes date. Stronger, deeper push changes day and date. Weekdays are in English and Kanji. Movement is in great condition and runs accurately. SKU# S1743 Model 6106-7003 Movement automatic Caliber 6106C with hacking Jewels 25 Case Stainless steel Case size 36mm x 40.5mm Lugs 18mm Dial Blue Crystal NOS Seiko acrylic crystal Bracelet Seiko RS15C18BK cowhide leather strap Serial # 191763 Service Aug 19, 2026