Seiko Cal. 6657 - 840

Seiko 6657-840

This Kinetic model from 1967 features a 37mm Hardlex-Coated Steel case. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-08750b985106]

Also known as: UFO

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
10.9mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
50m
Dial Color
Silver
Jewels
17j
Frequency
21,600 bph
Power Reserve
65 hours
Year
1967

Related Models

seikata-wm-08750b985106