Seiko Cal. 6640 - 264

Seiko 6640-264

This Solar model from 1973 features a 37mm Hardlex-Coated Steel case. With its 19mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-b0874fec0c22]

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
11.4mm
Lug Width
19mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
60m
Dial Color
Navy
Jewels
17j
Frequency
28,800 bph
Power Reserve
54 hours
Year
1973

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