Seiko Presage x Automatic ft. Cocktail Time aka Blue Moon Men Formal Round 50m Water Resistant Watch SRPK15J1 SRPK15 SRPK-15 SRPK-15J1 Discover the Seiko Presage Cocktail Time with a stunning Blue Moon inspired dial featuring gradation tones and gloss finish. Powered by a 41-hour automatic movement with manual winding, box-shaped crystal, and exhibition case back. Includes brown leather strap and tri-fold clasp with 50m water resistance. Caliber Number / Movement 4R35 (automatic with manual winding capacity) Power Reserve / Accuracy Approximately 41 hours (+45 to -35 seconds per day) Crystal Hardlex crystal (curved) Luminous Nil Case / Band Material Stainless steel case with leather (calfskin) band (deployment clasp with push-button release) Water Resistance 50m / 5 bar Case Size Thickness: 11.8 mm Diameter: 40.5 mm Length: 47.5 mm Lug width: 20.0 mm Other Specifications Seiko Presage x Automatic ft. Cocktail Time aka Blue Moon Made in Japan See-through case back Screw case back 23 jewels Date display Stop second hand function (hacking mechanism) Regular timekeeping (analog display)