Seiko Cal. 4431 - 400

The 4431-400 is a sought-after Kinetic piece from Seiko's golden era. The Coin-Edge bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-0f75f897b742]

Also known as: Helmet, Rally

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

45mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Black

Jewels

22j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1974

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