Seiko Cal. 6640 - 312

Seiko 6640-312

This Kinetic model from 1992 features a 34mm Hardlex-Coated Steel case. The Fixed bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-648d9d2a1c06]

Also known as: Silverwave, Sportsmatic

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
12.7mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
180m
Dial Color
Green
Jewels
17j
Frequency
36,000 bph
Power Reserve
59 hours
Year
1992

Related Models

seikata-wm-648d9d2a1c06