Seiko 7820-5470 Watch Guide,Seiko Quartz watch 7820-5140 / case no.7N0586 , made in Japan.,Seiko 7820-5380 high end quartz unisex dress watch from November 1988. Made in Japan Arm circumference 18cm Stainless steel bracelet is part of the case and can not be removed. There are,Seiko 7820-5470 Watch Guide,Seiko 7820-5380 high end quartz unisex dress watch from November 1988. Made in Japan Arm circumference 18cm Stainless steel bracelet is part of the case and can not be removed. There are