Seiko Cal. 6643 - 651

This Spring Drive model from 1986 features a 34mm Stainless Steel case. Powered by the 6643 caliber with 30j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-e0f248d17919]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

8.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Black

Jewels

30j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1986

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