Seiko Cal. 5643 - 312

Released in 1982, the Cal. 5643 with design code 312 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-c616a77fa4ec]

Also known as: Sumo, Panda

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1982

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