Seiko Cal. 5643 - 535

The 5643-535 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5643 caliber with 20j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-06f968bf15fd]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1986

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