Seiko Cal. 6331 - 699

The Seiko 6331-699 represents an important milestone in Seiko's 1975 lineup. Powered by the 6331 caliber with 26j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-053e2140f797]

Also known as: Helmet, Sea Horse

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

36mm

Case Thickness

12.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Black

Jewels

26j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1975

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