Seiko Cal. 6690 - 928

The 6690-928 is a sought-after Quartz piece from Seiko's golden era. With its 18mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-12bd2cc761ea]

Also known as: Baby Tuna

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

34mm

Case Thickness

13.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

23j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1981

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