Seiko Cal. 5663 - 716

Released in 1970, the Cal. 5663 with design code 716 was part of Seiko's domestic market collection. With its 21mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-1ea21ff17452]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Black

Jewels

23j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1970

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