Seiko Cal. 5643 - 326

The 5643-326 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5643 caliber with 19j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-81c49447c3c1]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

11.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

130m

Dial Color

Green

Jewels

19j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1965

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