Seiko Cal. 6618 - 990

The Seiko 6618-990 represents an important milestone in Seiko's 1970 lineup. It features a Navy dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-1333846e5b31]

Also known as: Golden Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

46mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Navy

Jewels

34j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1970

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