Brought to you by the makers of the beloved Dohm the Rohm portable white noise machine is perfect for white noise on the go. With 3 sound options and adjustable volume the Rohm lets you take control of your sound environment anywhere. This powerful portable sound machine masks background noise and provides better sleep office privacy and calming for sound-sensitive dogs. USB-rechargeable with an included charging cable the travel-friendly Rohm can operate for up to 8 hours on a single charge so you?ll never have to be without the comforts of white noise.