Seiko Cal. 6637 - 537

This Quartz model from 1981 features a 41mm Titanium case. With its 22mm lug width and 10.5mm profile, it sits comfortably on most wrists. [seikata-wm-f69153890507]

Also known as: Monster

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

41mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

150m

Dial Color

Burgundy

Jewels

36j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1981

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