22mm Stainless Steel Super Oyster Type II Band for SEIKO Diver 6309 Shipping Estimate : 7 - 10 Business Days within US. Finish : Brushed Material : 316L Stainless Steel (Solid Super Oyster) Spring Bar : Generic 2.5mm diameter Fat spring bars included 1 pair Design to fit : Seiko Divers 6309-7040 & 6309-7049