Seiko Cal. 4437 - 465

This Spring Drive model from 1975 features a 37mm Stainless Steel case. Powered by the 4437 caliber with 29j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-5884ce8d4b4d]

Also known as: World Timer, Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

170m

Dial Color

Black

Jewels

29j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1975

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