Case Diameter 42.3mm (Without Crown). Case Diameter 45mm (With Crown). The item "New Seiko SRP311 Mens Watch 2nd Generation Blk Orange Monster Stainless Steel" is in sale since Wednesday, April 3, 2019. This item is in the category "Collectibles\Vintage, Retro, Mid-Century\Unspecified, Unknown Date".The seller is "bbtiesto" and is located in HONG KONG. This item can be shipped worldwide.