Seiko Cal. 5640 - 817

Seiko 5640-817

This Automatic model from 1984 features a 40mm Gold-Plated case. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-25a5a6191308]

Also known as: Helmet, Baby Tuna

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
40mm
Case Thickness
9.2mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
60m
Dial Color
Blue Sunburst
Jewels
26j
Frequency
36,000 bph
Power Reserve
56 hours
Year
1984

Related Models

seikata-wm-25a5a6191308