Seiko Cal. 5640 - 970

Released in 1967, the Cal. 5640 with design code 970 was part of Seiko's domestic market collection. It features a Cream dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-ad60925ac0b8]

Also known as: Golden Tuna

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

9.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Cream

Jewels

29j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1967

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