This is an authentic GRAND SEIKO Ceramic Calfskin 46mm Spring Drive GMT Limited Watch SBGE039. The watch is crafted of black ceramic and features a blue dial, power reserve indicator, date indicator, sapphire crystal, exhibition case back, and an automatic spring drive movement. Follow this item for alerts. Grand Seiko is a registered trademark of Grand Seiko. FASHIONPHILE is not affiliated with Grand Seiko.