Spring Drive combines the precision of a quartz watch with the torque of a mechanical watch, to allow both the long hands and the high precision that Grand Seiko demands.

This achieves a 120 hour power reserve. The One-piece Center Bridge guarantees the movement’s strength, durability and shock resistance. Together, these innovative technologies …

The SBGA211 is powered by Spring Drive, Grand Seiko’s unique caliber, which combines the motive force of a mainspring found with the high precision of a quartz watch.

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 …

In 2004, Grand Seiko introduced the Spring Drive Caliber 9R65 with a monthly rate of ±15 seconds. Today, this legacy of accuracy in watchmaking reaches new heights with the …

Apr 1, 2025 · The jewels echo the glittering stars that sparkle during the early days of winter above the surrounding mountains, and the delicate texture of the movement’s surfaces reflects …

The watch is powered by the highly precise Spring Drive Caliber 9R66 with GMT, delivering a precision of ±15 seconds per month (equivalent to ±1 second per day).

The Spring Drive is Seiko’s proprietary mechanism which is made available only by SEIKO’s unique combination of skills in both mechanical and electronic micro-engineering.

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.

The automatic winding mechanism uses the Magic Lever mechanism developed in 1959, but with improved productivity, maintainability, and durability to enhance its winding efficiency. Caliber …