Seiko Cal. 6690 - 947

Released in 1992, the Cal. 6690 with design code 947 was part of Seiko's domestic market collection. With its 20mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-4b4e9e3de9ab]

Also known as: Sumo, Bullhead

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1992

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