Seiko Cal. 4498 - 639

This Spring Drive model from 1981 features a 34mm Stainless Steel case. The Coin-Edge bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-fe60a784f284]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1981

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