Seiko Cal. 5639 - 663

This Quartz model from 1976 features a 43mm Titanium case. The Coin-Edge bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-d91006729305]

Also known as: Silverwave

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

43mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1976

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