Seiko Cal. 6131 - 779

This Spring Drive model from 1975 features a 38mm Gold-Plated case. Powered by the 6131 caliber with 34j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-a1bf015723ce]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

34j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1975

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