Seiko Cal. 5640 - 400

Seiko 5640-400

This Automatic model from 1973 features a 45mm Two-Tone case. The Fixed bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-2a4f7439d0cd]

Also known as: Silverwave, Navigator

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
45mm
Case Thickness
8.6mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
100m
Dial Color
Burgundy
Jewels
20j
Frequency
21,600 bph
Power Reserve
68 hours
Year
1973

Related Models

seikata-wm-2a4f7439d0cd