Seiko Cal. 6691 - 690

Seiko 6691-690

This Automatic model from 1991 features a 41mm PVD Black case. With its 19mm lug width and 10.7mm profile, it sits comfortably on most wrists. [seikata-wm-4c7c6c46aacb]

Also known as: Silverwave, Arnie

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
41mm
Case Thickness
10.7mm
Lug Width
19mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
110m
Dial Color
Green
Jewels
31j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1991

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