Seiko Cal. 6631 - 133

Seiko 6631-133

The 6631-133 is a sought-after Quartz piece from Seiko's golden era. With its 18mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-f9b76c5b59ce]

Also known as: Rally, Golden Tuna

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
42mm
Case Thickness
15.3mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
40m
Dial Color
Silver
Jewels
36j
Frequency
21,600 bph
Power Reserve
55 hours
Year
1966

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