Seiko Cal. 6656 - 871

This Spring Drive model from 1977 features a 38mm Gold-Plated case. Powered by the 6656 caliber with 19j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-32456627a2a5]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1977

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