Seiko Cal. 6138 - 920

This Automatic model from 1975 features a 34mm Hardlex-Coated Steel case. Powered by the 6138 caliber with 31j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-82c0d92fde4c]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

Champagne

Jewels

31j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1975

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