Seiko Cal. 3860 - 984

The Seiko 3860-984 represents an important milestone in Seiko's 1969 lineup. With its 20mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-458074a5a9cd]

Also known as: Helmet, Rally

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

200m

Dial Color

Silver

Jewels

19j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1969

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