Case: Polished titanium case (partially ceramic and 18K rose gold) Case back: Polished titanium and sapphire crystal Case back specification: Screw-down transparent case back Crystal material: Domed sapphire crystal Coating: Anti-reflective coating on inner surface Luminescence: Yes (hands and hour markers) Case Dimensions: Width 43.2mm × Height 51.5mm × Thickness 15.4mm Strap Width: 23mm Clasp: Single-push three-fold clasp Strap Circumference (Maximum): 200mm Movement Number: 9SC5 Movement Specifications Drive Type: Mechanical Automatic Winding (with Manual Winding Function) Power Reserve: Approx. 72 hours when fully wound Static Accuracy: Average daily deviation +5 to -3 seconds This accuracy data is based on Grand Seiko's exclusive standards, measured in a factory-tested, standalone movement under 6-position and 3-temperature conditions. Actual accuracy during wear (wearing accuracy) may vary. Additionally, due to the nature of mechanical watches, accuracy may exceed the stated range depending on usage conditions (wearing duration, temperature, arm movement, strong impacts or vibrations). Wearing Accuracy: Daily deviation +8 to -1 seconds Water Resistance: Enhanced water resistance for daily use (10 bar) Magnetic Resistance: Equipped Weight: 162 grams Other: Case back engraved with “LIMITED EDITION” Case back engraved with serial number Screw-down crown Buckle section crafted in 18K rose gold Equipped with a tachymeter scale Number of jewels: 60 Chronograph functions (30-minute counter / 12-hour counter)