Seiko Cal. 3866 - 737

This Solar model from 1974 features a 38mm PVD Black case. Powered by the 3866 caliber with 19j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-63e569af33bb]

Also known as: Monster, Helmet

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

38mm

Case Thickness

8.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Silver

Jewels

19j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1974

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