A chronograph with the reliability of Spring Drive
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 caliber, 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 utilizes 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.
|Case back:||See-through & Screw case back|
|Glass Material:||Dual-curved sapphire crystal|
|Glass Coating:||Anti-reflective coating on inner surface|
|Case size:||Diameter 43.5mm Lug-to-lug 51.2mm Thickness 16.1mm|
|Clasp type:||Three-fold clasp with push button release|
|The perimeter of Band:||200mm|
|Caliber no.:||9R86 Instructions|
|Movement Type:||Spring Drive|
|Power reserve:||Approx. 72 hours(3 days)|
|Accuracy:||±15 seconds per month (±1 second per day)|
|Water resistance:||10 bar|
|Magnetic resistance:||4,800 A/m|
|Other details / Features:||
The three movements at the heart of Grand Seiko
One of the world's foremost mechanical movements, the culmination of high-precision micro-engineering and the attention to detail of Grand Seiko's expert watchmakers.
Spring Drive is a unique movement that delivers one-second-a-day precision, using just the power of a mainspring.