Seiko Cal. 4494 - 636

The Seiko 4494-636 represents an important milestone in Seiko's 1967 lineup. Powered by the 4494 caliber with 21j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-7cd249de7cbd]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

Silver

Jewels

21j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1967

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