Seiko Cal. 3817 - 656

This Automatic model from 1967 features a 41mm PVD Black case. Powered by the 3817 caliber with 26j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-31ec0682bb32]

Also known as: Bullhead, Navigator

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1967

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