Seiko Cal. 3815 - 217

Seiko 3815-217

This Automatic model from 1966 features a 40mm Titanium case. With its 18mm lug width and 14.0mm profile, it sits comfortably on most wrists. [seikata-wm-0435cfdaf1f5]

Also known as: Monster, Bellmatic

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
40mm
Case Thickness
14.0mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
140m
Dial Color
Cream
Jewels
24j
Frequency
21,600 bph
Power Reserve
40 hours
Year
1966

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