Seiko Cal. 4431 - 375

Seiko 4431-375

This Kinetic model from 1965 features a 36mm Stainless Steel case. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-e5b408bb2329]

Also known as: Helmet

Specifications

Movement
Kinetic
Case Material
Stainless Steel
Case Width
36mm
Case Thickness
14.1mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
150m
Dial Color
Black
Jewels
29j
Frequency
21,600 bph
Power Reserve
54 hours
Year
1965

Related Models

seikata-wm-e5b408bb2329