Seiko Cal. 4437 - 304

The Seiko 4437-304 represents an important milestone in Seiko's 1972 lineup. Powered by the 4437 caliber with 31j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-60680607b4a1]

Also known as: Rally, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

12.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

110m

Dial Color

Silver

Jewels

31j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1972

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