Seiko Cal. 6689 - 644

The Seiko 6689-644 represents an important milestone in Seiko's 1976 lineup. Powered by the 6689 caliber with 21j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-756e5eb8c4db]

Also known as: Samurai, Panda

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

White

Jewels

21j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1976

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