Seiko Cal. 6399 - 640

This Hand-Winding model from 1968 features a 40mm Hardlex-Coated Steel case. With its 18mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-514430d59e95]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Burgundy

Jewels

36j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1968

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