Seiko Cal. 3811 - 871

This Hand-Winding model from 1973 features a 34mm Hardlex-Coated Steel case. Powered by the 3811 caliber with 25j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-916dfa14419b]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Cream

Jewels

25j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1973

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