Seiko Cal. 4539 - 668

Seiko 4539-668

This Spring Drive model from 1969 features a 34mm Two-Tone case. With its 20mm lug width and 10.9mm profile, it sits comfortably on most wrists. [seikata-wm-f75f7f094054]

Also known as: Monster, Helmet

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
34mm
Case Thickness
10.9mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
100m
Dial Color
Navy
Jewels
24j
Frequency
21,600 bph
Power Reserve
55 hours
Year
1969

Related Models

seikata-wm-f75f7f094054