Seiko Cal. 6638 - 894

This Hand-Winding model from 1979 features a 38mm Stainless Steel case. Powered by the 6638 caliber with 18j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-21b013c1bc9b]

Also known as: Navigator, Arnie

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

14.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Cream

Jewels

18j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1979

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