Seiko Cal. 6647 - 266

The Seiko 6647-266 represents an important milestone in Seiko's 1967 lineup. With its 21mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-09cbbcc338ee]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Green

Jewels

35j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1967

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