Seiko Cal. 6399 - 256

The Seiko 6399-256 represents an important milestone in Seiko's 1965 lineup. With its 22mm lug width and 8.8mm profile, it sits comfortably on most wrists. [seikata-wm-3e529212e8c2]

Also known as: UFO

Specifications

Movement

Solar

Case Material

Titanium

Case Width

38mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

170m

Dial Color

Champagne

Jewels

31j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1965

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