Seiko Cal. 3887 - 331

Seiko 3887-331

The 3887-331 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3887 caliber with 34j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-edeca8b0d312]

Also known as: Monster, Navigator

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
38mm
Case Thickness
15.0mm
Lug Width
18mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
140m
Dial Color
Cream
Jewels
34j
Frequency
28,800 bph
Power Reserve
66 hours
Year
1993

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seikata-wm-edeca8b0d312