Seiko Cal. 4536 - 557

The Seiko 4536-557 represents an important milestone in Seiko's 1974 lineup. Powered by the 4536 caliber with 27j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-00fda9bc50e0]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

10.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Cream

Jewels

27j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1974

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