Seiko Cal. 6638 - 720

Seiko 6638-720

This Quartz model from 1977 features a 41mm Stainless Steel case. With its 22mm lug width and 12.3mm profile, it sits comfortably on most wrists. [seikata-wm-fc43c011e1fd]

Also known as: Arnie

Specifications

Movement
Quartz
Case Material
Stainless Steel
Case Width
41mm
Case Thickness
12.3mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
90m
Dial Color
Silver
Jewels
23j
Frequency
21,600 bph
Power Reserve
63 hours
Year
1977

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