Seiko Cal. 3861 - 180

Seiko 3861-180

The 3861-180 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3861 caliber with 23j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-74068c4bbd06]

Also known as: Arnie

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
42mm
Case Thickness
13.2mm
Lug Width
20mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
170m
Dial Color
Burgundy
Jewels
23j
Frequency
36,000 bph
Power Reserve
37 hours
Year
1981

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