Seiko Cal. 3865 - 420

Seiko 3865-420

This Quartz model from 1984 features a 36mm Hardlex-Coated Steel case. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-152ffc171358]

Also known as: Sumo, Baby Tuna

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
11.7mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
70m
Dial Color
Black
Jewels
36j
Frequency
21,600 bph
Power Reserve
60 hours
Year
1984

Related Models

seikata-wm-152ffc171358