Seiko Cal. 5637 - 431

Seiko 5637-431

This Automatic model from 1980 features a 46mm Two-Tone case. The Bidirectional bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-89212a260791]

Also known as: Silverwave, Sportsmatic

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
46mm
Case Thickness
8.3mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
80m
Dial Color
Blue Sunburst
Jewels
22j
Frequency
28,800 bph
Power Reserve
45 hours
Year
1980

Related Models

seikata-wm-89212a260791