Seiko Cal. 3861 - 120

The 3861-120 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Navy dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-8ddf8c9dd33e]

Also known as: Monster, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

38mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

70m

Dial Color

Navy

Jewels

30j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1987

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