Seiko Cal. 3897 - 642

Seiko 3897-642

This Automatic model from 1986 features a 41mm PVD Black case. With its 22mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-e0a0b6fba171]

Also known as: Monster, Helmet

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
41mm
Case Thickness
8.7mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
140m
Dial Color
White
Jewels
18j
Frequency
36,000 bph
Power Reserve
46 hours
Year
1986

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