Seiko Cal. 6640 - 311

Seiko 6640-311

This Solar model from 1968 features a 44mm Titanium case. With its 21mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-6f4942b58f1d]

Specifications

Movement
Solar
Case Material
Titanium
Case Width
44mm
Case Thickness
9.5mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
100m
Dial Color
Champagne
Jewels
32j
Frequency
28,800 bph
Power Reserve
71 hours
Year
1968

Related Models

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