Seiko Cal. 4437 - 238

The Seiko 4437-238 represents an important milestone in Seiko's 1965 lineup. Powered by the 4437 caliber with 36j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-107c94e1aa6d]

Also known as: Silverwave

Specifications

Movement

Solar

Case Material

Titanium

Case Width

39mm

Case Thickness

14.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1965

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