Seiko Cal. 4431 - 391

Seiko 4431-391

This Automatic model from 1986 features a 40mm Two-Tone case. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-b35d0c9472d2]

Also known as: Turtle

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
40mm
Case Thickness
13.3mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
180m
Dial Color
Blue Sunburst
Jewels
19j
Frequency
21,600 bph
Power Reserve
62 hours
Year
1986

Related Models

seikata-wm-b35d0c9472d2