Seiko Cal. 3897 - 742

The 3897-742 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3897 caliber with 22j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-da3296af6eb8]

Also known as: Bullhead, Emperor

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Cream

Jewels

22j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1982

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