Seiko Cal. 6631 - 765

Seiko 6631-765

The 6631-765 is a sought-after Quartz piece from Seiko's golden era. The Coin-Edge bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-a8e4d0ce8a05]

Also known as: Helmet, Sea Horse

Specifications

Movement
Quartz
Case Material
Stainless Steel
Case Width
41mm
Case Thickness
9.2mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
50m
Dial Color
Champagne
Jewels
25j
Frequency
28,800 bph
Power Reserve
51 hours
Year
1976

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