Seiko Cal. 6618 - 630

The Seiko 6618-630 represents an important milestone in Seiko's 1979 lineup. It features a Black dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-3742fa401283]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1979

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