Seiko Cal. 6647 - 205

The 6647-205 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6647 caliber with 30j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-85e34f2ca89a]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1972

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