Seiko Premier x Kinetic ft. Perpetual Calendar Auto Relay Men Formal Round 100m Water Resistant Watch SNP135P1 SNP135 SNP-135 SNP-135P1 Explore the unique features of this Seiko perpetual calendar watch, which merges kinetic movement with quartz precision. Its innovative design features a winding rotor that powers various calendar functions, including big date, month, leap year, and 24-hour indication. With a sleek profile and bold aesthetics, such as mid-century inspired lugs and a striking guilloche dial, this watch is both practical and stylish, making it a standout choice for any occasion. Caliber Number / Movement 7D48 (kinetic) Power Reserve / Accuracy Approximately 4 years when fully charged (+/-15 seconds per month) Crystal Sapphire crystal Luminous Nil Case / Band Material Stainless steel case with stainless steel band (three-fold clasp with push-button release) Water Resistance 100m / 10 bar Case Size Thickness: 12.7 mm Diameter: 41.6 mm Length: 51.8 mm Lug width: 21.0 mm Other Specifications Seiko Premier x Kinetic ft. Perpetual Calendar Auto Relay Screw case back Perpetual calendar (to year 2099) Date, month, leap year and 24-hour display Energy depletion forewarning function Time-relay function (hands will indicate correct time after several swings of the watch) Power saving function (hands stop to save power when untouched for approximately 24 hours) Regular timekeeping (analog display)