Seiko Cal. 6657 - 867

This Spring Drive model from 1988 features a 35mm Titanium case. Powered by the 6657 caliber with 19j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-a8b55fb119e4]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

14.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Navy

Jewels

19j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1988

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