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Valkee Oy is a health technology company founded in 2007 that has developed a bright light headset device for treatment of Seasonal Affective Disorder. The knowhow of the company is based on long term scientific research and development work together with the Oulu University.

The Valkee Bright Light Headset substitutes the mood-elevating effects of the sun, by channeling safe bright light directly to photosensitive regions of the brain through the ear canal. That's why Valkee increases energy, and can act as a preventative or treatment of mood swings. Valkee has CE Class II(a) medical device certification and is clinically tested.