Seiko Cal. 6397 - 187

The 6397-187 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6397 caliber with 22j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-54484a8f61e9]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

38mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Champagne

Jewels

22j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1985

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