Seiko Cal. 6631 - 489

Seiko 6631-489

The Seiko 6631-489 represents an important milestone in Seiko's 1982 lineup. Powered by the 6631 caliber with 35j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-b6797fd9462b]

Also known as: Rally, Golden Tuna

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
14.3mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
60m
Dial Color
Green
Jewels
35j
Frequency
36,000 bph
Power Reserve
72 hours
Year
1982

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