[4K Video] What's so great about Grand Seiko's Caliber 9SA5? An in-depth explanation by the editor-in-chief

This is a watch-related video from webChronos. The second installment introduces the Grand Seiko Heritage Collection Mechanical Hi-Beat 36000 80 Hours, which features the Caliber 9SA5 movement, which debuted in 2020. What's different from the previous 9S series? Editor-in-Chief Masamasa Hirota's enthusiastic explanation is a must-listen and must-watch.

Caliber 9SA5 & Grand Seiko "Heritage Collection Mechanical Hi-Beat 36000 80 Hours"

What's so great about Cal.9SA5?

Grand Seiko's Heritage Collection Mechanical Hi-Beat 36000 80 Hours was released in 2020. The automatic movement Cal. 9SA5, which was first installed in this model, shocked watch enthusiasts around the world with its high-quality specifications.

What was so revolutionary about Cal. 9SA5? What are the advantages of the dual impulse escapement? Editor-in-Chief Masamasa Hirota talks about Seiko's world-class automatic movement.

Please enjoy these extremely nerdy watch explanatory videos, which are only possible with webChronos.

Introduction model overview

This limited edition model is equipped with the newly designed automatic Cal. 9SA5 movement. It features twin barrels, a highly efficient dual impulse escapement, a winding balance spring, and a Grand Seiko free sprung movement. Its features are worthy of a flagship model.