Seiko Cal. 6636 - 610

This Quartz model from 1978 features a 40mm Two-Tone case. With its 18mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-7573f45797b7]

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1978

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