Seiko Cal. 6631 - 590

Seiko 6631-590

This Hand-Winding model from 1997 features a 42mm PVD Black case. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-d061eac57f3b]

Also known as: World Timer, Arnie

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
42mm
Case Thickness
10.8mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
70m
Dial Color
Green
Jewels
30j
Frequency
28,800 bph
Power Reserve
59 hours
Year
1997

Related Models

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