Seiko Cal. 5640 - 326

Released in 1980, the Cal. 5640 with design code 326 was part of Seiko's domestic market collection. It features a Cream dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-e18f0e8c1fcc]

Also known as: Panda, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1980

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