Grand Seiko Sport Collection Stainless Steel With Ceramic Bezel Spring Drive GMT 40.5mm SBGE255

Exterior: Stainless steel with ceramic bezel
Case back: Screw case back
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
Band width: 20mm
Clasp type: Three-fold clasp with push button release
Caliber no.: 9R66 Instructions
Movement Type: Spring Drive
Power reserve: Approx. 72 hours(3 days)
Accuracy: ±15 seconds per month (±1 second per day)
Water resistance: 20 bar
Magnetic resistance: 4,800 A/m
Weight: 172 g
Other details / Features: Screw-down crown, 30 jewels, 24-hour hand (dual time display function), Power reserve indicator, Calendar-linked time difference adjustment function