Seiko Cal. 3815 - 531

Seiko 3815-531

This Automatic model from 1986 features a 44mm Titanium case. Powered by the 3815 caliber with 22j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-a3a2ed86ada9]

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
44mm
Case Thickness
9.4mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
90m
Dial Color
Green
Jewels
22j
Frequency
28,800 bph
Power Reserve
36 hours
Year
1986

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seikata-wm-a3a2ed86ada9