Case Material : Stainless steel with ceramic bezel Glass Material : Dual-curved sapphire crystal Glass Coating : Anti-reflective coating on inner surface LumiBrite : LumiBrite on hands and index(es) Case size : Diameter 40.5mm Lug-to-lug 48.7mm Thickness 14.7mm Clasp type : Three-fold clasp with push button release
Caliber no. : 9R66 Movement Type : Spring Drive Power reserve : Approx. 72 hours(3 days) Accuracy : ±1 second per day / ±15 seconds per month (average)
Water resistance : 20 bar Magnetic resistance : 4,800 A/m Weight : 172.0 g Other details / Features :
- ・24-hour hand (dual time display function)
- ・30 jewels
- ・Calendar-linked time difference adjustment function
- ・Case back with lion emblem
- ・Date display
- ・Power reserve indicator
- ・Screw case back
- ・Screw-down crown
- ・Stop second hand function
Equipped with a GMT hand, this watch features Grand Seiko’s unique Spring Drive caliber, which combines the motive force of a mainspring with the high precision of a quartz watch.
Housed in a water-resistant stainless steel case with ceramic bezel, a 24-hour GMT hand and Lumibrite indices for exceptional precision and legibility complemented by the smooth motion glide of Spring Drive.
The tranquil hours of summer
Of course, a great watch must measure time but it should also help you to savour it. In the heat of high summer in Japan, many people like to relax quietly with nature and enjoy the beauty of hydrangea petals floating on water. There could be no better companion at such moments than a Grand Seiko Spring Drive watch, whose hands sweep silently and continuously across the dial in a perfect reflection of the true nature of time. SBGE255 is also 20 bar water resistant, has a zirconia ceramic bezel and offers a GMT hand so that it is as practical and versatile as it is a delight to behold.