Seiko Cal. 6640 - 182

Seiko 6640-182

This Hand-Winding model from 1991 features a 45mm Titanium case. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-baa13f6dea6c]

Also known as: Sea Horse

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
45mm
Case Thickness
15.7mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
30m
Dial Color
Silver
Jewels
34j
Frequency
21,600 bph
Power Reserve
44 hours
Year
1991

Related Models

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