Seiko Cal. 5661 - 663

Seiko 5661-663

The 5661-663 is a sought-after Solar piece from Seiko's golden era. Powered by the 5661 caliber with 18j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-a209715ab90a]

Also known as: Sportsmatic

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
14.8mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
40m
Dial Color
Green
Jewels
18j
Frequency
36,000 bph
Power Reserve
68 hours
Year
1995

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seikata-wm-a209715ab90a