Seiko Cal. 6643 - 243

The Seiko 6643-243 represents an important milestone in Seiko's 1993 lineup. The Inner Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-cab0f2e67768]

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

9.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Black

Jewels

23j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1993

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