Seiko Cal. 6646 - 509

The 6646-509 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6646 caliber with 20j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-43d059a79cb7]

Also known as: Samurai, UFO

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Champagne

Jewels

20j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1967

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