Marpac Dohm-SS Single Speed All-Natural White Noise Sound Machine, Actual Fan Inside, Tan

The Original Sound Conditioner first introduced in 1962; now in its 4th generation design. The Dohm-SS Single Speed All-Natural White Noise Sound Machine is so effective, it was named "Official Sound Conditioner" of the National Sleep Foundation. Instead of a digital recording, this unit has a built-in fan that creates the sound of rushing air. The Dohm-SS consists of a compact adjustable acoustic housing surrounding a single speed electric motor with a unique asymmetrical fan. Note: The single speed of the Dohm-SS is the higher of the two speeds available on the dual speed Dohm-DS. This design allows it to create the soothing sound of rushing air, the Marpac Signature Sound, without the disturbance of actual moving air. This all-natural "white noise" sound has been proven to effectively block noises at a broad range of frequencies, so you can get deep, undisturbed sleep all night long. Take Control: Own your personal sound environment with the simple twist of a wrist; twisting the cap on the acoustic housing will increase or decrease the size of the sound hole openings. By adjusting the sound hole openings, you will customize the volume and tone to find a soothing white noise sound that's ideal for you. Additional Features: Includes the Marpac Customer Service Guarantee – limited three-year factory warranty, 8' power cord, and one single powerfully soothing speed.