Seiko Cal. 6121 - 766

This Spring Drive model from 1976 features a 42mm Gold-Plated case. Powered by the 6121 caliber with 18j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-7393b64cb0b5]

Also known as: Helmet, World Timer

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

8.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Burgundy

Jewels

18j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1976

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