Seiko Cal. 3860 - 728

This Kinetic model from 1965 features a 37mm Hardlex-Coated Steel case. Powered by the 3860 caliber with 20j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-aa7b27c7a812]

Also known as: Monster

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1965

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