NATURAL SOOTHING SOUNDS: This portable white noise machine offers rich, relaxing sounds from which you can choose, such as white noise, summer night, rain, serenade, lullaby, stream, wave, soft music, birdsong. It can mask noise for better sleep, concentration and comfort, so you fall asleep faster and wake up refreshed in the morning. ADJUSTABLE VOLUME TIMER SETTINGS: With this white noise machine for children, designed with volume control, you can set the perfect level for your unique environment. It is also equipped with an optional automatic switch-off timer with 3 options: 15, 30 or 60 minutes. The simple buttons are easy to operate, easy to switch between the sounds and adjust the volume. COMPACT PORTABLE: This battery-operated travel sound machine has a portable, compact design. You can easily put it in your luggage or bag for travelling, or place it in your bedroom, living room or office, so that it can block the background noise while sleeping, working or traveling to experience peace in any situation. PERFECT FOR RELAXING SLEEP: This baby sleep aid helps block disturbing environmental noises, so that you or your little one can easily fall asleep and stay asleep longer. It is also ideal for creating a distraction-free workplace, or simply to reduce the distracting effect of outside noises, for a more relaxed environment, day and night.