Seiko Cal. 5643 - 310

The 5643-310 is a sought-after Spring Drive piece from Seiko's golden era. With its 20mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-fc84dade258d]

Also known as: Golden Tuna, Emperor

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

15.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Champagne

Jewels

35j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1981

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