Seiko Cal. 3860 - 615

The Seiko 3860-615 represents an important milestone in Seiko's 1978 lineup. Powered by the 3860 caliber with 26j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-97b6f024d00c]

Also known as: Monster, Helmet

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

26j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1978

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