Seiko Premier x Kinetic ft. Direct Drive aka Moonphase Men Formal Round 100m Water Resistant Watch SRX015P1 SRX015 SRX-015 SRX-015P1 Discover the sophisticated Seiko Premier SRX015P1 Kinetic Moonphase watch, featuring a 42.5mm stainless steel case with sapphire crystal and innovative kinetic movement generating 1-month power reserve. Includes moon phase display, power reserve indicator, day-date complication, and 100m water resistance. Caliber Number / Movement 5D88 (kinetic with manual winding capacity) Power Reserve / Accuracy Approximately 1 month 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: 42.5 mm Length: 48.4 mm Lug width: 22.0 mm Other Specifications Seiko Premier x Kinetic ft. Direct Drive aka Moonphase Screw case back Power reserve indicator Display function of resuming electric power generation Day, date and 24-hour display Moon phase display Regular timekeeping (analog display)