Seiko Presage x Automatic ft. Cocktail Time aka Blue Moon Men Formal Round 50m Water Resistant Watch SRPB41J1 SRPB41 SRPB-41 SRPB-41J1 Seiko Presage Cocktail Time Blue Moon SRPB41J1 - A sophisticated 40.5mm men dress watch inspired by classic cocktails. Features a stainless steel case and bracelet, curved hardlex crystal, and 50m water resistance. Powered by 4R35 automatic movement (41h power reserve) with exhibition case back. Perfect for formal occasions with its elegant blue dial and Japanese craftsmanship. 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 stainless steel 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)