Seiko Cal. 6394 - 638

This Hand-Winding model from 1973 features a 45mm Two-Tone case. With its 19mm lug width and 8.4mm profile, it sits comfortably on most wrists. [seikata-wm-29ee50be9d08]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

8.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

100m

Dial Color

White

Jewels

20j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1973

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