Citizen General x Mechanical ft. Monochromatic Tsuyosa Collection Men Casual Formal Tonneau 50m Water Resistant Watch NK5010-51X NK5010 NK-5010 Discover the rebirth of a CITIZEN classic, as the TSUYOSA series returns with modern flair, featuring a 40mm case, luminous hands, and a 60-hour power reserve mechanical caliber. Experience refined luxury with precise timekeeping, scratch-resistant sapphire glass, and exceptional comfort. Caliber Number / Movement 8322 (automatic with manual winding capacity) Power Reserve / Accuracy Approximately 60 hours (+40 to -20 seconds per day) Crystal Sapphire crystal Luminous Luminous on hands and indexes Case & Band Material Stainless steel case with metal band (three-fold clasp with push-button release) Water Resistance 50m / 5 bar Case Size Diameter: 40.0 mm Other Specifications Citizen Mechanical x Tsuyosa Collection ft. Monochromatic See-through case back Screw case back 21 jewels Stop second hand function (hacking mechanism) Date display Equipped with small second hand Regular timekeeping (analog display)