Seiko Cal. 5666 - 310

Released in 1978, the Cal. 5666 with design code 310 was part of Seiko's domestic market collection. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-3f0bbac71dc7]

Also known as: Baby Tuna

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

8.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

White

Jewels

25j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1978

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