Seiko Cal. 3857 - 110

This Kinetic model from 1981 features a 46mm Hardlex-Coated Steel case. Powered by the 3857 caliber with 30j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-ed1669d75f24]

Also known as: Sumo, Helmet

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1981

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