Seiko Cal. 6678 - 851

This Spring Drive model from 1987 features a 46mm Hardlex-Coated Steel case. Powered by the 6678 caliber with 33j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-e7fe498dbd58]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

15.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Black

Jewels

33j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1987

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