Seiko Cal. 6399 - 330

The Seiko 6399-330 represents an important milestone in Seiko's 1972 lineup. With its 21mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-15c0f81df50f]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

13.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1972

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