Seiko 5 Sports x Automatic ft. Petite SKX Series Women Formal Round 100m Water Resistant Watch SRE003K1 SRE003 SRE-003 SRE-003K1 Seiko 5 Sports Petite SKX Automatic Women Watch - Classic 28mm stainless steel timepiece with 2R06 automatic movement (40hr power reserve). Features 100m water resistance, hardlex crystal, lumibrite illumination, and day/date display. Magnetic resistant (4,800 A/m) with hacking seconds. Perfect blend of sporty durability and feminine elegance. Caliber Number / Movement 2R06 (automatic with manual winding capacity) Power Reserve / Accuracy Approximately 40 hours (+45 to -35 seconds per day) Crystal Hardlex crystal Luminous LumiBrite on hands and indexes 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: 11.2 mm Diameter: 28.0 mm Length: 33.1 mm Lug width: 14.0 mm Other Specifications Seiko 5 Sports x Automatic ft. Petite SKX Series Magnetic resistance (4,800 A/m) Screw case back 21 jewels Day and date display Stop second hand function (hacking mechanism) Regular timekeeping (analog display)