Seiko Cal. 6636 - 177

This Quartz model from 1966 features a 37mm Stainless Steel case. Powered by the 6636 caliber with 22j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-efd44eb8459b]

Also known as: World Timer, Emperor

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

13.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Silver

Jewels

22j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1966

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