Seiko Cal. 6638 - 189

Seiko 6638-189

This Solar model from 1978 features a 36mm PVD Black case. With its 22mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-06227cb940d8]

Also known as: Sumo, Navigator

Specifications

Movement
Solar
Case Material
PVD Black
Case Width
36mm
Case Thickness
13.3mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
180m
Dial Color
White
Jewels
31j
Frequency
21,600 bph
Power Reserve
41 hours
Year
1978

Related Models

seikata-wm-06227cb940d8