Case Material : High-intensity titanium Glass Material : Dual-curved sapphire Glass Coating : Anti-reflective coating on inner surface Case size : Diameter 43.5mm × Thickness 16.1mm The perimeter of Band : 200mm Clasp type : Three-fold clasp with push button release
Calibre no. : 9R86 Movement Type : Spring Drive Power reserve : Approx. 72 hours(3 days) Accuracy : ±1 second per day / ±15 seconds per month (average)
Water resistance : 10 bar Magnetic resistance : Magnetic resistance Weight : 124.0 g Other details / Features :
- ・24-hour hand (dual time display function)
- ・50 jewels
- ・Against an allergic reaction to metal
- ・Calendar-linked time difference adjustment function
- ・Case back with lion emblem
- ・Chronograph with 30 minutes & 12 hours
- ・Power reserve display
- ・Screw case back
- ・Screw-down crown
- ・See-through case back
- ・Stop seconds hand function
The deep black of the watch face contrasts with the gold of the hands and indices, giving this Spring Drive chronograph an alluringly mature gloss.
The case and band are made with High-intensity titanium, providing a scratch and corrosion resistant finish with a 137g weight reduction, making it 30% lighter than stainless steel and a pleasure to wear.
At its core, the watch is powered by a Grand Seiko’s unique Spring Drive calibre, which combines the motive force of a mainspring with the high precision of a quartz watch, and offers the high-accuracy functionality of a chronograph.
Grand Seiko's original glide motion is also featured in the chronograph's second hand.
The chronograph utilises a Ready/Start button with a half-press shutter, reducing mistakes and allowing for accurate starts. The button has been designed with comfort of use in mind and produces a satisfying click with just the right resistance.