Seiko Cal. 5661 - 763

This Solar model from 1977 features a 42mm Hardlex-Coated Steel case. Powered by the 5661 caliber with 18j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-95878e97f142]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1977

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