Seiko Presage x Automatic ft. Cocktail Time aka Sky Diving Men Formal Round 50m Water Resistant Watch SRPB43J1 SRPB43 SRPB-43 SRPB-43J1 Seiko Presage Cocktail Time Sky Diving SRPB43J1 - Elegant 40.5mm men watch with premium calfskin leather strap and striking blue dial. Features automatic 4R35 movement (41h power reserve), curved hardlex crystal, and 50m water resistance. Showcases Japanese craftsmanship with exhibition case back and precise timekeeping. Perfect for formal occasions. 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 (three-fold 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 Sky Diving Made in Japan See-through case back Screw case back 23 jewels Date display Stop second hand function (hacking mechanism) Regular timekeeping (analog display)