Seiko Cal. 6139 - 136

Seiko 6139-136

This Hand-Winding model from 1978 features a 42mm Titanium case. The Bidirectional bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-630f8c85f36d]

Also known as: Turtle, Helmet

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
42mm
Case Thickness
14.9mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
160m
Dial Color
Silver
Jewels
19j
Frequency
36,000 bph
Power Reserve
57 hours
Year
1978

Related Models

seikata-wm-630f8c85f36d