Citizen General x Automatic ft. Mini Tsuyosa 60 Unisex Formal Tonneau 50m Water Resistant Watch NK0032-56A NK0032 NK-0032 Citizen Tsuyosa 60 NK0030 and NK0032, two compact 37mm automatic watches in the streamlined integrated-bracelet collection. Both feature a guilloche-textured dial, a transparent case back, and a scratch-resistant sapphire crystal. Powered by the in-house Caliber 8310 with a 60-hour power reserve, each timepiece is water-resistant to 50 meters. Caliber Number / Movement 8310 (automatic with manual winding capacity) Power Reserve / Accuracy Approximately 60 hours (+40 to -20 seconds per day) Crystal Sapphire crystal with magnifier Luminous Luminous on hands and indexes Case / Band Material Stainless steel case with stainless steel band (deployment clasp with push-button release) Water Resistance 50m / 5 bar Case Size Thickness: 12.3 mm Diameter: 37.0 mm Length: 42.3 mm Lug width: Integrated Other Specifications Citizen General x Automatic ft. Mini Tsuyosa 60 See-through back case Screw case back 21 jewels Date display Stop second hand function (hacking mechanism) Regular timekeeping (analog display)