Seiko Cal. 3815 - 939

Seiko 3815-939

This Automatic model from 1987 features a 45mm PVD Black case. Powered by the 3815 caliber with 36j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-2cb6f4566b07]

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
45mm
Case Thickness
8.9mm
Lug Width
22mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
140m
Dial Color
Blue Sunburst
Jewels
36j
Frequency
21,600 bph
Power Reserve
58 hours
Year
1987

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