Seiko Cal. 5633 - 638

Seiko 5633-638

This Quartz model from 1990 features a 39mm Two-Tone case. With its 18mm lug width and 8.2mm profile, it sits comfortably on most wrists. [seikata-wm-19706227b613]

Also known as: Monster, Baby Tuna

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
39mm
Case Thickness
8.2mm
Lug Width
18mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
50m
Dial Color
Silver
Jewels
26j
Frequency
21,600 bph
Power Reserve
46 hours
Year
1990

Related Models

seikata-wm-19706227b613