Seiko Cal. 3861 - 200

This Spring Drive model from 1977 features a 46mm Hardlex-Coated Steel case. Powered by the 3861 caliber with 23j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-c2cdc67be3c0]

Also known as: Monster, Silverwave

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Burgundy

Jewels

23j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1977

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