Seiko Cal. 6643 - 962

The Seiko 6643-962 represents an important milestone in Seiko's 1970 lineup. With its 21mm lug width and 10.9mm profile, it sits comfortably on most wrists. [seikata-wm-eca52f1232bd]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

10.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Silver

Jewels

35j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1970

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