Seiko Cal. 5666 - 789

The Seiko 5666-789 represents an important milestone in Seiko's 1977 lineup. Powered by the 5666 caliber with 33j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-c7c136427d91]

Also known as: Shogun, Sportsmatic

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Navy

Jewels

33j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1977

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