Published by on August 16, 2026 ~31 mm stainless steel cushion case (digital caliper shows 30.9 mm), recessed crown at 4 o'clock, screw-down caseback signed SEIKO, WATER RESISTANT, STAINLESS STEEL 6109-8000. Brown two-piece leather strap with contrast stitching and stainless tang buckle (underside stamped Keep Watching 18).