Seiko Cal. 5640 - 437

Seiko 5640-437

This Automatic model from 1984 features a 38mm PVD Black case. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-179a65115b61]

Also known as: Panda, UFO

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
38mm
Case Thickness
11.5mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
100m
Dial Color
Blue Sunburst
Jewels
21j
Frequency
21,600 bph
Power Reserve
63 hours
Year
1984

Related Models

seikata-wm-179a65115b61