Seiko Cal. 5643 - 687

This Hand-Winding model from 1976 features a 46mm Stainless Steel case. Powered by the 5643 caliber with 32j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-6bc345fe41b6]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

15.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

120m

Dial Color

Burgundy

Jewels

32j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1976

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