Seiko Cal. 6640 - 676

The Seiko 6640-676 represents an important milestone in Seiko's 1982 lineup. Powered by the 6640 caliber with 20j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-eabde8452a39]

Also known as: Pogue, Bullhead

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

9.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Burgundy

Jewels

20j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1982

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