1. 7 SOOTHING MUSIC: We especially select 7 soothing natural sound (white noise, shusher sound, wave sound, raining sound, brook, lullaby and purr) that can effectively realize external noise canceling. Small size and light weight make it portable to carry with to anywhere. 2. WARM NIGHT LIGHT: Warm colors and soft light can help your baby fall asleep. No flicker. The wavelength of the light will not affect baby’s sight. Environmental friendly ABS material adopted, and cute penguin shape make it a perfect baby gift. You can use it as a night lights for kids room. Even when you travel, you can carry it with you as a lovely toy. 3. AUTO-OFF TIMER SETTING: 3 settings of time (15 minutes, 30 minutes and 60 minutes) for you to choose freely. Just set your time, and let the sleep sound machine do the magic. When times up, it will turn off accordingly. Simple and convenient. Perfect for sleep sound timer therapy as well. 4. VOICE CONTROL:Turn the sound machine to voice control mode. Once baby cries, it will play the music automatically, even when mum is asleep or not around there. Our white noise machine can do the magic to help baby sleep tight again. 5. CHARGING SETTING: Internal 1800mh rechargeable lithium battery keeps a long standby time. It can also be powered by USB (USB cable included), just plug in and it will charge quickly. Suitable for many occasions (home,office,clinic,even nursery) you can use it as baby room decor, nightlight, also yoga sleep sound machine.