Seiko Cal. 6618 - 556

The Seiko 6618-556 represents an important milestone in Seiko's 1967 lineup. It features a Green dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-745b4d5f5388]

Also known as: UFO

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

14.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1967

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