Seiko Cal. 6640 - 872

The Seiko 6640-872 represents an important milestone in Seiko's 1976 lineup. Powered by the 6640 caliber with 21j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-c52199c013ae]

Also known as: Pogue

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

15.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Black

Jewels

21j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1976

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