Seiko Cal. 5688 - 762

Released in 1978, the Cal. 5688 with design code 762 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-4ff6984fdceb]

Also known as: Tuna, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

15.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1978

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