Seiko Cal. 6390 - 938

The 6390-938 is a sought-after Spring Drive piece from Seiko's golden era. With its 20mm lug width and 13.0mm profile, it sits comfortably on most wrists. [seikata-wm-239c3bde68a6]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Navy

Jewels

35j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1966

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