Seiko Cal. 3861 - 931

Seiko 3861-931

This Hand-Winding model from 1983 features a 44mm PVD Black case. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-89ef89f1fa9b]

Also known as: Monster, World Timer

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
44mm
Case Thickness
13.6mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
110m
Dial Color
Green
Jewels
19j
Frequency
36,000 bph
Power Reserve
64 hours
Year
1983

Related Models

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