Seiko Cal. 4431 - 121

The Seiko 4431-121 represents an important milestone in Seiko's 1992 lineup. Powered by the 4431 caliber with 27j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-4e0447482804]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Black

Jewels

27j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1992

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