Seiko 5 Sport Day-Date Automatic 7S26-0480 21 Jewel wristwatch. VINTAGE & RUNING November 18, 2023seiko7s26-0480, automatic, day-date, jewel, runing, seiko, sport, vintage, wristwatch-admin Seiko 5 Sport 7S26-0480 Automatic 21 Jewel. Kinetically Powered (No battery needed). 41 Hour power reserve. The second hand almost glides instead of ticking. Power reserve 41 hours. Stop seconds hand: no. Share