Seiko Cal. 3815 - 687

Seiko 3815-687

This Solar model from 1969 features a 39mm Titanium case. The Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-9926655f3749]

Also known as: Sumo, Sportsmatic

Specifications

Movement
Solar
Case Material
Titanium
Case Width
39mm
Case Thickness
8.4mm
Lug Width
20mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
150m
Dial Color
White
Jewels
20j
Frequency
21,600 bph
Power Reserve
63 hours
Year
1969

Related Models

seikata-wm-9926655f3749