Seiko Cal. 6399 - 938

The 6399-938 is a sought-after Spring Drive piece from Seiko's golden era. With its 19mm lug width and 14.0mm profile, it sits comfortably on most wrists. [seikata-wm-ff3c86635a46]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

14.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

25j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1965

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