Seiko Cal. 6647 - 332

The 6647-332 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6647 caliber with 30j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-ecdfa935ac2f]

Also known as: Helmet, Rally

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Cream

Jewels

30j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1968

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