Seiko Cal. 6647 - 332

Seiko 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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