Seiko Cal. 3860 - 828

This Quartz model from 1972 features a 35mm Hardlex-Coated Steel case. Powered by the 3860 caliber with 35j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-862aa1630ce1]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

12.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

35j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1972

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