Seiko Cal. 6644 - 987

The Seiko 6644-987 represents an important milestone in Seiko's 1984 lineup. The Bidirectional bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-bcde491f5d60]

Also known as: UFO, Emperor

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

46mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Navy

Jewels

26j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1984

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