Seiko Cal. 5684 - 421

Seiko 5684-421

This Quartz model from 1977 features a 42mm Hardlex-Coated Steel case. The Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-4e5e65a69709]

Also known as: Helmet, World Timer

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
8.3mm
Lug Width
21mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
140m
Dial Color
Navy
Jewels
24j
Frequency
21,600 bph
Power Reserve
68 hours
Year
1977

Related Models

seikata-wm-4e5e65a69709