Seiko Cal. 6631 - 681

The Seiko 6631-681 represents an important milestone in Seiko's 1978 lineup. Powered by the 6631 caliber with 26j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-f2657573811d]

Also known as: Pogue

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

14.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

70m

Dial Color

Cream

Jewels

26j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1978

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