Seiko Cal. 6613 - 318

The Seiko 6613-318 represents an important milestone in Seiko's 1971 lineup. It features a White dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-3b1a86e4cd09]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

White

Jewels

31j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1971

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