Seiko Cal. 5642 - 840

Released in 1986, the Cal. 5642 with design code 840 was part of Seiko's domestic market collection. With its 18mm lug width and 12.5mm profile, it sits comfortably on most wrists. [seikata-wm-6f10fc6abff8]

Also known as: Samurai, Sumo

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Black

Jewels

18j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1986

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