Seiko Cal. 5643 - 870

The Seiko 5643-870 represents an important milestone in Seiko's 1984 lineup. Powered by the 5643 caliber with 24j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-cd903c7e2016]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

White

Jewels

24j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1984

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