A Spring Drive GMT for the next generation

Equipped with a GMT hand, this watch features Grand Seiko’s unique Spring Drive caliber, which combines the motive force of a mainspring with the high precision of a quartz watch.  Housed in a water-resistant stainless steel case with ceramic bezel, a 24-hour GMT hand and Lumibrite indices for exceptional precision and legibility complemented by the smooth motion glide of Spring Drive.

A Variety of Color

These new Spring Drive models not only prove ultimate functionality, but also come in three different color varieties, appealing to a broader range of customer.

In 2006, just two years after the completion of Caliber 9R65, Grand Seiko's first 9R Spring Drive movement with GMT function, the Caliber 9R66, was unveiled. "GMT" stands for Greenwich Mean Time, and uses a 24-hour hand (GMT hand) as the fourth hand on the watch dial in addition to the hour, minute and second hands.