Seiko Cal. 6131 - 828

This Spring Drive model from 1965 features a 40mm Two-Tone case. It features a Cream dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-5a57bc2f0967]

Also known as: Bullhead, Emperor

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

13.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Cream

Jewels

18j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1965

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