Seiko Cal. 6659 - 906

The Seiko 6659-906 represents an important milestone in Seiko's 1987 lineup. It features a Burgundy dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-c3f22f234f10]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

31j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1987

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