Seiko Cal. 5660 - 744

The 5660-744 is a sought-after Spring Drive piece from Seiko's golden era. With its 21mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-6af8419b0727]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Black

Jewels

31j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1969

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