Seiko 5 Sports x Automatic ft. SKX Series Couple Formal Round 100m Water Resistant Watch SRPD51 SRE003 SRPD SREDiscover the Seiko 5 Sports Automatic SKX Series Couple Watch - elegant, durable, and water-resistant up to 100m. Featuring hardlex crystal, lumibrite indexes, stainless steel case and band, and a 40-hour power reserve. Perfect for formal occasions with day-date display, hacking mechanism, and unidirectional bezel. Shop now for timeless style and precision!Caliber Number / Movement4R36 / 2R06 (automatic with manual winding capacity)Power Reserve / AccuracyApproximately 40 hours (+45 to -35 seconds per day)CrystalHardlex crystalLuminousLumibrite on hands and indexesCase / Band MaterialStainless steel case with stainless steel band (three-fold clasp with secure lock, push-button release)Water Resistance100m / 10 barCase SizeThickness: 13.4 / 11.2 mmDiameter: 42.5 / 28.0 mmLength: 46.0 / 33.1 mmLug width: 22.0 / 14.0 mmOther SpecificationsSeiko 5 Sports x Automatic ft. SKX SeriesUnidirectional rotating bezelSee-through back caseScrew case back24 / 21 jewelsDay and date displayStop second hand function (hacking mechanism)Regular timekeeping (analog display)