Seiko Cal. 6638 - 864

This Hand-Winding model from 1983 features a 44mm Two-Tone case. Powered by the 6638 caliber with 20j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-604145e95427]

Also known as: Shogun

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1983

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