Seiko Cal. 4457 - 431

The Seiko 4457-431 represents an important milestone in Seiko's 1976 lineup. Powered by the 4457 caliber with 21j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-fe23ed304e07]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Navy

Jewels

21j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1976

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