Seiko Cal. 6638 - 434

Seiko 6638-434

The 6638-434 is a sought-after Hand-Winding piece from Seiko's golden era. The Inner Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-ad8a6c8ce900]

Also known as: Pogue, Bellmatic

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
46mm
Case Thickness
14.2mm
Lug Width
19mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
40m
Dial Color
Black
Jewels
18j
Frequency
21,600 bph
Power Reserve
58 hours
Year
1987

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