Seiko Cal. 4431 - 700

This Automatic model from 1978 features a 35mm Titanium case. The Coin-Edge bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-652be82e54ec]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

35mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1978

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