Seiko Cal. 4436 - 254

The Seiko 4436-254 represents an important milestone in Seiko's 1981 lineup. Powered by the 4436 caliber with 20j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-beb1fa1eabc1]

Also known as: Navigator, Emperor

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

13.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Cream

Jewels

20j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1981

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