Seiko Cal. 6231 - 237

This Automatic model from 1969 features a 40mm PVD Black case. Powered by the 6231 caliber with 26j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-d65bcbf9333a]

Also known as: UFO, Navigator

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

26j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1969

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