Seiko Cal. 4431 - 412

The Seiko 4431-412 represents an important milestone in Seiko's 1976 lineup. Powered by the 4431 caliber with 36j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-b84ce7fb44f4]

Also known as: Crown

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

13.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1976

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