Beloved by generations since 1962, the Dohm is the original white noise machine. The Dohm model features our signature fan-based natural white noise producing the famous Marpac Sound the soothing ambient sounds of rushing air, without the disturbance of actual moving air or other irritations. With two-speed options for adjustable tone and volume, the Dohm makes it simple to create a personalized sound environment, excellently masking background sounds and allowing for better sleep, office privacy, effective soothing for kids and babies, and calming for sound-sensitive dogs. Features: Dohm Sound Machine: Fan-Based White Noise 2 Speed Adjustments Adjustable Tone 7-foot 120V AC power cable (included)