Seiko Presage x Automatic ft. Japanese Garden aka Open Heart Men Formal Round Water Resistant Watch SSA379J1 SSA379 SSA-379 SSA-379J1Discover the Seiko Presage Automatic Japanese Garden watch SSA379J1. Inspired by serene landscapes, it features a unique dial, a 4R39 automatic movement with 41-hour power reserve, and a dual-curved sapphire crystal. Housed in a refined 41.8mm stainless steel case with exhibition back. A sophisticated timepiece for the discerning collector.Caliber Number / Movement4R39 (automatic with manual winding capacity)Power Reserve / AccuracyApproximately 41 hours (+45 to -35 seconds per day)CrystalSapphire crystal (dual-curved)LuminousNilCase / Band MaterialStainless steel case with leather (calfskin) band (three-fold clasp with push-button release)Water ResistanceWater resistantCase SizeThickness: 12.5 mmDiameter: 41.8 mmLength: 48.4 mmLug width: 20.0 mmOther SpecificationsSeiko Presage x Automatic ft. Japanese Garden aka Open HeartMade in JapanSee-through case backScrew case back24 jewels24-hour displayStop second hand function (hacking mechanism)Regular timekeeping (analog display)