Beloved by generations since 1962 the Dohm Classic is the original white noise machine. The Classic model features our fan-based natural white noise – the soothing ambient sounds of rushing air without the disturbance of actual moving air. Two-speed options and adjustable tone and volume make it simple to create a personalized sound environment. Mask background sounds and enjoy better sleep office privacy effective soothing for kids and babies or calming for sound-sensitive dogs. Powered by a 7-foot 120V AC plug (for domestic use only) just plug in the Dohm Classic flip the switch to high or low then rotate the cap and collar to find the best sound for you.