Seiko Cal. 6397 - 433

The 6397-433 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6397 caliber with 20j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-a2d6bf81cf69]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

10.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

White

Jewels

20j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1976

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