Seiko Cal. 6642 - 579

The Seiko 6642-579 represents an important milestone in Seiko's 1980 lineup. Powered by the 6642 caliber with 19j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-e8fd4fedf438]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Champagne

Jewels

19j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1980

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