Seiko Cal. 6630 - 151

This Spring Drive model from 1976 features a 44mm Gold-Plated case. Powered by the 6630 caliber with 23j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-faa8b6299d2a]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

White

Jewels

23j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1976

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