Seiko Cal. 5661 - 276

This Spring Drive model from 1970 features a 42mm Titanium case. With its 18mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-e45599a5e910]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Champagne

Jewels

35j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1970

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