What type of movement is the Grand Seiko 9S66?

The Grand Seiko 9S66 is a automatic movement, manufactured in-house by Grand Seiko in Japan.

What is the power reserve of the Grand Seiko 9S66?

The Grand Seiko 9S66 has a power reserve of 72h.

What is the frequency of the Grand Seiko 9S66?

The Grand Seiko 9S66 beats at 28,800 vph (4 Hz), which is 28800 vibrations per hour (vph).

What are the specifications of the Grand Seiko 9S66?

The Grand Seiko 9S66 features 35 jewels. Production status: In Production.

Grand Seiko 9S66

AutomaticIn ProductionIn-house

Family: 9S35 jewels72h power reserve28,800 vph (4 Hz)Based on Grand Seiko 9S65

9S65 variant. Grand Seiko automatic. 72h PR, 35 jewels, 28800 vph.

Last updated 9 Oct 2026Suggest a correction

TECHNICAL SPECIFICATIONS

Movement Type

Automatic

Jewel Count

35 jewels

Power Reserve

72h

Frequency

28,800 vph (4 Hz)

Display Type

Analog

Shock Protection

Diashock

COMPLICATIONS

GMT

QUICK FACTS

BRAND

Grand Seiko

TYPE

Automatic

STATUS

In Production

MANUFACTURE

In-house

LAUNCH YEAR

2011

BASED ON

Grand Seiko 9S65

CALIBER FAMILY

COUNTRY

Japan

ALSO KNOWN AS

9s66acaliber 9s66

Last updated 9 Oct 2026Suggest a correction

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