Seiko Cal. 5638 - 487

Seiko 5638-487

This Automatic model from 1972 features a 35mm Two-Tone case. The Inner Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-60d824185e87]

Also known as: Sumo, Baby Tuna

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
35mm
Case Thickness
11.3mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
50m
Dial Color
Black
Jewels
31j
Frequency
28,800 bph
Power Reserve
71 hours
Year
1972

Related Models

seikata-wm-60d824185e87