Seiko Cal. 3871 - 186

Seiko 3871-186

The 3871-186 is a sought-after Automatic piece from Seiko's golden era. It features a Burgundy dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-a73ce36a89df]

Also known as: Helmet, UFO

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
38mm
Case Thickness
11.8mm
Lug Width
20mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
130m
Dial Color
Burgundy
Jewels
32j
Frequency
21,600 bph
Power Reserve
41 hours
Year
1988

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