Seiko Cal. 6663 - 635

Seiko 6663-635

The 6663-635 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6663 caliber with 22j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-4a622d2819b2]

Also known as: Baby Tuna

Specifications

Movement
Quartz
Case Material
Stainless Steel
Case Width
34mm
Case Thickness
12.6mm
Lug Width
22mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
30m
Dial Color
Blue Sunburst
Jewels
22j
Frequency
21,600 bph
Power Reserve
69 hours
Year
1984

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seikata-wm-4a622d2819b2