Seiko Cal. 6669 - 646

The 6669-646 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6669 caliber with 27j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-766fbaddd1f6]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

13.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Cream

Jewels

27j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1979

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