Seiko Cal. 6642 - 904

This Hand-Winding model from 1968 features a 41mm Hardlex-Coated Steel case. Powered by the 6642 caliber with 29j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-57913c9f610f]

Also known as: Turtle, Bullhead

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

13.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

170m

Dial Color

Burgundy

Jewels

29j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1968

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