Seiko Cal. 6638 - 149

This Automatic model from 1979 features a 40mm PVD Black case. Powered by the 6638 caliber with 18j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-ea7fd515cec7]

Also known as: Samurai, UFO

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1979

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