Seiko Cal. 6397 - 433

Seiko 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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