Seiko Cal. 6397 - 154

The 6397-154 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6397 caliber with 29j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-94235bb38bbc]

Also known as: Navigator, Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

130m

Dial Color

Silver

Jewels

29j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1981

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