Seiko SKX031, made for the Japanese market, as it says on the dial on the caseback. The glass was once replaced by an original Seiko glass, and I replaced the strap, which was no longer usable. Movement has been serviced and has a 6-month warranty. Has some signs of wear, but is still in very good condition. Brand: Seiko. Model: SKX031/7S26-0040 Movement: mechanical, automatic Calibre: 7S26, serviced Case: steel Case condition: very good Case diameter: 40 x 48 mm (without crown) Glass: good, only scratch only visible with magnifying glass Crown: original Crystal: new Crown: original Dial: new, minor damage to the logo and around the centre. Arms: new Bezel inlay: new Strap: new, AM Strap size: 20 mm Strap length: 23 cm Rating (0-10): 8. Watch is sent by registered post, insured.