Seiko Cal. 6667 - 491

The Seiko 6667-491 represents an important milestone in Seiko's 1975 lineup. Powered by the 6667 caliber with 25j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-154b9ba76dda]

Also known as: Helmet, Rally

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1975

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