Seiko Cal. 6646 - 101

This Spring Drive model from 1972 features a 41mm Titanium case. With its 18mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-51b2883964a2]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

150m

Dial Color

Champagne

Jewels

25j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1972

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