Dohm-SS by Marpac. The Original Sound Conditioner, formerly known as the Sleepmate/Sound Screen 580A: * Creates the soothing sound of rushing air, known as "white noise"- the single speed of the Dohm-SS is the higher of the two speeds available on the Dohm-DS/ * * Provides excellent noise-masking capabilities and a soft comfortable background sound where it might otherwise be too quiet * Perfect for baby nurseries, day care centers, college dorms, apartments, or any sleep environment where unwanted, disturbing or intrusive noise is a problem * Made of durable plastic * Suitable for home, office or travel * Made in the USA; UL listed; one year limited warranty