Grand Seiko SBGX SBGX261 9F62-0AB0 GRAND SEIKO SBGX261 Heritage Collection Purchased this September Grand Seiko considers "accuracy," "beauty," "legibility," and "long-lasting wear" and "ease of use" to be the essence of a wristwatch. The 9F quartz was created by earnestly and thoroughly pursuing these seemingly ordinary elements. Without being bound by the conventional wisdom of quartz watches up to that point, many new features were incorporated to complete the ultimate quartz watch. The case, with its distortion-free mirror finish and finely brushed surface, quietly asserts its presence. With its exquisitely calculated case size that fits neatly on the cuff, it is a fitting partner, understated yet offering solid peace of mind and reliability. Exterior: Stainless steel Back cover specification: Screw back Glass material: Sapphire Coating: Anti-reflective coating on the inner surface Case size: 37.0mm wide, 44.6mm long, 10.0mm thick Band width: 19mm Clasp: One-push three-fold clasp Wrist circumference length (maximum): 205mm Caliber No.: 9F62 Instructions Driving system: Battery-powered quartz Accuracy: ±10 seconds per year Functions Water resistance: Reinforced water resistance for daily life (10 bar) Magnetic resistance: Yes Weight: 134 g JYT1-105