Seiko Cal. 6618 - 798

This Kinetic model from 1977 features a 41mm Stainless Steel case. The Bidirectional bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-83d860b8dc0b]

Also known as: Tuna, Bullhead

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1977

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