Seiko Cal. 0731 - 927

Seiko 0731-927

This Spring Drive model from 1973 features a 39mm PVD Black case. With its 18mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-40f3b737919c]

Also known as: Golden Tuna

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
39mm
Case Thickness
11.6mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
70m
Dial Color
Blue Sunburst
Jewels
36j
Frequency
21,600 bph
Power Reserve
62 hours
Year
1973

Related Models

seikata-wm-40f3b737919c