Seiko Cal. 4431 - 548

This Automatic model from 1968 features a 35mm Two-Tone case. With its 22mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-81e7a9c527a2]

Also known as: UFO, Navigator

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Green

Jewels

24j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1968

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