Seiko Cal. 5643 - 859

The 5643-859 is a sought-after Quartz piece from Seiko's golden era. It features a Black dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-38419afb0e4a]

Also known as: World Timer

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

42mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1978

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