Seiko Presage x Automatic ft. Cocktail Time aka Champagne Men Formal Round 50m Water Resistant Watch SSA387J1 SSA387 SSA-387 SSA-387J1 Explore the sophisticated Seiko Presage Cocktail Time series. This elegant automatic watch features a unique central power reserve indicator and a refined pointer date complication. Housed in a polished 14.5mm case and powered by the caliber 4R57 movement. A distinguished, complication-rich timepiece for the discerning collector. Caliber Number / Movement 4R57 (automatic with manual winding capacity) Power Reserve / Accuracy Approximately 41 hours (+40 to -20 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: 14.4 mm Diameter: 40.5 mm Length: 47.5 mm Lug width: 20.0 mm Other Specifications Seiko Presage x Automatic ft. Cocktail Time aka Champagne Made in Japan See-through case back Screw case back 29 jewels Date display Power reserve indicator Stop second hand function (hacking mechanism) Regular timekeeping (analog display)