Seiko Cal. 6643 - 389

This Spring Drive model from 1991 features a 41mm Stainless Steel case. Powered by the 6643 caliber with 34j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-ad0e39dcafe8]

Also known as: Tuna, Panda

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Black

Jewels

34j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1991

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