The SBGA211 is powered by Spring Drive, Grand Seiko’s unique caliber, which combines the motive force of a mainspring found with the high precision of a quartz watch. The case and bracelet are made with high-intensity titanium, providing a scratch and corrosion resistant finish, making it 30% lighter than stainless steel and a pleasure to wear. The blue steel second hand moves smoothly in glide motion, and glows over the contrasting pure white face to create an even more dramatic movement. It has a 72-hour (3-day) power reserve, and a power reserve indicator on the bottom left of the dial.Exterior:Case Material: High-intensity titaniumGlass Material: Dual-curved sapphire crystalGlass Coating: Anti-reflective coating on inner surfaceCase size: Diameter 41mm × Thickness 12.5mmThe perimeter of Band: 193mmClasp type: Three-fold clasp with push button releaseMovement:Caliber No: 9R65Movement Type: Spring DrivePower reserve: Approx. 72 hours(3 days)Accuracy: ±1 second per day / ±15 seconds per month (average)Features:Water resistance: 10 barMagnetic resistance: EquippedWeight: 100.0 g30 jewelsAgainst an allergic reaction to metalCase back with lion emblemDate displayPower reserve displayScrew case backScrew-down crownStop seconds hand functionSee-through case backGrand Seiko Style #: SBGA211...