Seiko Cal. 6636 - 829

This Spring Drive model from 1973 features a 41mm Titanium case. Powered by the 6636 caliber with 18j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-90f9be96b96c]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

8.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1973

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