Seiko Cal. 6644 - 742

The Seiko 6644-742 represents an important milestone in Seiko's 1988 lineup. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-8edf1d2e4adc]

Also known as: UFO, Bellmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

White

Jewels

35j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1988

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