Seiko Cal. 5640 - 283

Seiko 5640-283

This Hand-Winding model from 1971 features a 45mm Two-Tone case. The Inner Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-8d9a630d7e03]

Also known as: UFO

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
45mm
Case Thickness
8.7mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
120m
Dial Color
Champagne
Jewels
19j
Frequency
21,600 bph
Power Reserve
45 hours
Year
1971

Related Models

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