Seiko Cal. 6643 - 971

The Seiko 6643-971 represents an important milestone in Seiko's 1995 lineup. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-8659cb623f26]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

White

Jewels

25j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1995

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