Seiko Cal. 6690 - 981

Released in 1981, the Cal. 6690 with design code 981 was part of Seiko's domestic market collection. It features a Cream dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-7d3ffab2ed61]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

11.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Cream

Jewels

30j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1981

Related Models

• Seiko 6186-415
• Seiko 7191-110
• Seiko 7180-958
• Seiko 6382-215
• Seiko 7141-175
• Seiko 6179-510
• Seiko 7093-907
• Seiko 4418-544
• Seiko 7052-710
• Seiko 0781-202
• Seiko 5665-282
• Seiko 6283-741