Seiko Cal. 3856 - 439

Seiko 3856-439

This Spring Drive model from 1987 features a 35mm PVD Black case. Powered by the 3856 caliber with 33j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-fc531bfd10e7]

Also known as: Monster

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
35mm
Case Thickness
13.1mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
120m
Dial Color
Champagne
Jewels
33j
Frequency
28,800 bph
Power Reserve
59 hours
Year
1987

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