Seiko Cal. 5648 - 657

This Spring Drive model from 1972 features a 46mm Stainless Steel case. With its 21mm lug width and 13.7mm profile, it sits comfortably on most wrists. [seikata-wm-f81388d01588]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Black

Jewels

29j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1972

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