Seiko Cal. 6638 - 828

Seiko 6638-828

This Quartz model from 1974 features a 34mm PVD Black case. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-f05a2abcd827]

Also known as: World Timer

Specifications

Movement
Quartz
Case Material
PVD Black
Case Width
34mm
Case Thickness
10.7mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
150m
Dial Color
Cream
Jewels
28j
Frequency
28,800 bph
Power Reserve
49 hours
Year
1974

Related Models

seikata-wm-f05a2abcd827