Seiko Cal. 6638 - 687

Seiko 6638-687

This Hand-Winding model from 1998 features a 37mm PVD Black case. With its 21mm lug width and 14.8mm profile, it sits comfortably on most wrists. [seikata-wm-f7fff3628243]

Also known as: Turtle, Helmet

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
37mm
Case Thickness
14.8mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
200m
Dial Color
Champagne
Jewels
17j
Frequency
21,600 bph
Power Reserve
49 hours
Year
1998

Related Models

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