Seiko Cal. 4437 - 513

The Seiko 4437-513 represents an important milestone in Seiko's 1968 lineup. Powered by the 4437 caliber with 19j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-190f4285661f]

Also known as: UFO, Navigator

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

13.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Black

Jewels

19j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1968

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