Seiko Cal. 6618 - 436

Released in 1979, the Cal. 6618 with design code 436 was part of Seiko's domestic market collection. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-2ab2726ce3bf]

Also known as: UFO, Emperor

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Burgundy

Jewels

27j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1979

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