Seiko Cal. 6690 - 305

Released in 1982, the Cal. 6690 with design code 305 was part of Seiko's domestic market collection. The Fixed bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-618acdc479ea]

Also known as: Bullhead, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

8.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1982

Related Models

• Seiko 6668-634
• Seiko 4511-463
• Seiko 6142-611
• Seiko 7156-802
• Seiko 6640-271
• Seiko 7145-182
• Seiko 4449-798
• Seiko 0767-563
• Seiko 0771-370
• Seiko 3817-681
• Seiko 4534-860
• Seiko 7018-546