Seiko Cal. 6378 - 548

Seiko 6378-548

This Automatic model from 1975 features a 46mm Titanium case. The Inner Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-307e8f1ff566]

Also known as: Sumo

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
46mm
Case Thickness
13.3mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
120m
Dial Color
Blue Sunburst
Jewels
31j
Frequency
21,600 bph
Power Reserve
53 hours
Year
1975

Related Models

seikata-wm-307e8f1ff566