Seiko Cal. 5663 - 618

The Seiko 5663-618 represents an important milestone in Seiko's 1976 lineup. It features a Champagne dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-c2522629ad29]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

44mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

110m

Dial Color

Champagne

Jewels

34j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1976

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