Seiko Cal. 3816 - 491

Seiko 3816-491

This Spring Drive model from 1985 features a 37mm Gold-Plated case. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-5b6bac8f1e91]

Also known as: Helmet, Navigator

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
37mm
Case Thickness
9.8mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
140m
Dial Color
Green
Jewels
26j
Frequency
21,600 bph
Power Reserve
50 hours
Year
1985

Related Models

seikata-wm-5b6bac8f1e91