Spring Drive GMT Stainless Steel / White / Bracelet
Stick / Dot
The Grand Seiko SBGE209 was introduced in 2017, when Grand Seiko became a brand of its own rather than a collection within the larger Seiko family. It features a stainless steel case and a white dial. It replaced the SBGE009.
Caliber 9R66 is a self-winding movement with GMT function, based on Seiko's Spring Drive technology. It was introduced in 2006.
Spring Drive, one of the great innovations in modern watch making history, regulates a spring-driven movement with state-of-the-art electronic technology that functions without batteries or other external power source. Its sole power source is a mainspring, which drives a series of gears. A rotor, connected to the end of these gears, generates a small electrical charge that activates an electronic circuit and quartz oscillator. Its accuracy is unprecedented for a watch wound by a mainspring. The development of the 9R Spring Drive movement was possible only because Grand Seiko is one of the few manufacturers with expertise in both mechanical and electronic watches.