Seiko Cal. 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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