Seiko Cal. 6640 - 459

Seiko 6640-459

This Automatic model from 1993 features a 38mm Hardlex-Coated Steel case. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-c45be98a6898]

Also known as: Sumo, Crown

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
38mm
Case Thickness
8.3mm
Lug Width
20mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
110m
Dial Color
White
Jewels
24j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1993

Related Models

seikata-wm-c45be98a6898