Seiko Cal. 6630 - 597

The Seiko 6630-597 represents an important milestone in Seiko's 1966 lineup. Powered by the 6630 caliber with 32j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-e02b5b370e68]

Also known as: Helmet, Flighty

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

8.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

White

Jewels

32j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1966

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