Seiko Cal. 6690 - 281

The Seiko 6690-281 represents an important milestone in Seiko's 1981 lineup. It features a Navy dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-0c7f56fba296]

Also known as: Helmet, Rally

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

12.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

27j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1981

Related Models

• Seiko 7083-658
• Seiko 6340-287
• Seiko 6679-123
• Seiko 7178-298
• Seiko 4513-422
• Seiko 5246-326
• Seiko 6288-846
• Seiko 6657-440
• Seiko 7168-757
• Seiko 7038-132
• Seiko 6158-124
• Seiko 0740-536