Seiko Cal. 4431 - 925

The Seiko 4431-925 represents an important milestone in Seiko's 1967 lineup. Powered by the 4431 caliber with 22j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-25fb83dc808b]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

45mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Cream

Jewels

22j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1967

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