Seiko Cal. 6642 - 980

The Seiko 6642-980 represents an important milestone in Seiko's 1997 lineup. Powered by the 6642 caliber with 27j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-44d558b9e621]

Also known as: Tuna, Navigator

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1997

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