Seiko Cal. 6639 - 270

Seiko 6639-270

This Automatic model from 1993 features a 40mm Hardlex-Coated Steel case. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-53f842136f83]

Also known as: Sumo, Silverwave

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
10.7mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
40m
Dial Color
Burgundy
Jewels
33j
Frequency
21,600 bph
Power Reserve
69 hours
Year
1993

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seikata-wm-53f842136f83