Seiko Cal. 6131 - 606

This Spring Drive model from 1970 features a 35mm Gold-Plated case. Powered by the 6131 caliber with 21j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-b0507645c0df]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Champagne

Jewels

21j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1970

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