Seiko Cal. 6631 - 284

This Quartz model from 1975 features a 34mm Stainless Steel case. Powered by the 6631 caliber with 32j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-266def60f5f4]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

White

Jewels

32j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1975

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