Seiko Cal. 6642 - 254

The Seiko 6642-254 represents an important milestone in Seiko's 1972 lineup. Powered by the 6642 caliber with 19j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-bbc03a82d501]

Also known as: Monster, Bullhead

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

34mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Green

Jewels

19j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1972

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