Seiko Cal. 6637 - 173

This Quartz model from 1968 features a 43mm Titanium case. Powered by the 6637 caliber with 21j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-394b3911c473]

Also known as: Shogun

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

43mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Green

Jewels

21j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1968

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