Seiko Cal. 6637 - 194

The Seiko 6637-194 represents an important milestone in Seiko's 1970 lineup. Powered by the 6637 caliber with 34j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-610b5a992d7c]

Also known as: Navigator, Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Champagne

Jewels

34j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1970

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