Grand Seiko
Spring Drive GMT (Sport Collection)
Ref. SBGE257
The Grand Seiko SBGE257 is a high-end GMT chronometer from the Sport Collection, featuring Grand Seiko’s proprietary Spring Drive caliber (9R66) for ultra-precise automatic movement with a 72-hour power reserve. It combines a 40.5mm stainless steel case with a ceramic bezel, green dial, and Lumibrite markers for readability. Notable for its independently adjustable GMT hand and water resistance up to 200 meters, it blends sporty design with luxury craftsmanship, appealing to collectors and GMT enthusiasts.
crystalDual-curved sapphire with anti-reflective coating
braceletStainless steel, 20mm width, folding clasp with push-button release, lug-to-lug: 48.7mm
movement9R66 Spring Drive (Automatic/Self-winding with Manual-winding), GMT, Power Reserve: ~72 hours, Accuracy: ±1 second/day (±15 seconds/month)
functionsDate, GMT (24-hour display), Power Reserve, Hacking seconds, Independently adjustable hour hand
lug width20mm
dial colorGreen
case diameter40.5mm
case materialStainless steel with ceramic bezel
water resistance200 meters (20 bar)
year2023
A registered Grand Seiko SBGE257 carries a permanent RGATT passport: origin, history and owners, verifiable by anyone, and a documented history makes a watch easier to sell.