Seiko Cal. 6641 - 545

The Seiko 6641-545 represents an important milestone in Seiko's 1991 lineup. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-c6dd35217485]

Also known as: UFO, Flighty

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

14.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Burgundy

Jewels

22j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1991

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