Seiko Cal. 6397 - 500

The 6397-500 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6397 caliber with 34j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-ea11685b6345]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Cream

Jewels

34j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1965

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