Seiko Cal. 5680 - 657

This Spring Drive model from 1971 features a 42mm Two-Tone case. With its 19mm lug width and 8.9mm profile, it sits comfortably on most wrists. [seikata-wm-7abc1a79b6f2]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

8.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Burgundy

Jewels

24j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1971

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