Seiko Cal. 6637 - 808

Seiko 6637-808

This Spring Drive model from 1988 features a 39mm PVD Black case. With its 22mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-819f6bd45deb]

Also known as: Sumo, Emperor

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
39mm
Case Thickness
9.0mm
Lug Width
22mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
90m
Dial Color
Cream
Jewels
24j
Frequency
28,800 bph
Power Reserve
36 hours
Year
1988

Related Models

seikata-wm-819f6bd45deb