Seiko Cal. 5663 - 635

This Quartz model from 1979 features a 39mm Two-Tone case. With its 20mm lug width and 10.5mm profile, it sits comfortably on most wrists. [seikata-wm-866e3ce4cf80]

Also known as: Turtle

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

39mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Champagne

Jewels

31j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1979

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