Seiko Cal. 3818 - 561

The Seiko 3818-561 represents an important milestone in Seiko's 1981 lineup. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-28b5b9319426]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

190m

Dial Color

White

Jewels

21j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1981

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