Seiko Cal. 3861 - 413

The 3861-413 is a sought-after Automatic piece from Seiko's golden era. With its 21mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-6a5aa1ac85a2]

Also known as: Monster, Golden Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1977

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