MULTIPLE NATURAL SOUNDS: This white noise machine is better than a lullaby, it has 24 soothing sounds, including white noise, fan, ocean, chirp, water stream, summer night, thunder & rain, and forest, each sound has 3 different types of options. To provide the most relaxing and noise-canceling environment for you, choose one according to your preferenceAUTO-OFF TIMER: The mini noisemaker for sleeping can be set with 15, 30, 60 minutes or continuously. The sound spa includes an adjustable volume control, so you can choose the right volume depending on whether you are playing it for adults or babiesHEADPHONE CAN BE CONNECTED: There is a headphone jack on the machine, you can use a earphone to connect the white noise machine through the jack so that you can turn it up louder and do not bother anyone during your nap in the officeUNIQUE LIGHTWEIGHT DESIGN: The sleep easy sound machine is small and lightweight which is perfect for home and travel use, you can use it wired or wireless, it powered by adapter or 3 pieces AA batteries(no included), 3 new batteries can be used for 48 hours. Dual USB ports with 1.0A output can safely charge your device, Use for: Home, Office, Kids Room or NurseryVARIOUS USES: This sound machine emits 24 natural sounds that mask those from the surroundings like noises or disturbances. It is the best choice for tinnitus remedy, snore masking, insomnia, yoga, and relaxation, etc