[100% Customer Service]: The design of our White Noise Machine is easy to use and suitable for any age group. All-in-one sleep solutions for adults, kids, and babies. Multi-functional creativity and stylish appearance make it a great gift choice for any occasion. We strive to provide better after-sales service. If you have any questions, please feel free to contact us. [Memory Function & Portable]: Memory function automatically restores your previous volume, sound and time. With 1200mAh Battery, this Sleep Sound Machine has more than 6 hours of battery life. With Subwoofer, HIFI Sound Quality and AUX Audio, it can provide higher quality sound effects and help improve sleep. And Supporting for Earphones and Bluetooth - Connecting wirelessly with your phone. It is powered by USB, small and lightweight, easy to carry and use at home, even perfect for traveling. [3 Timers Sleep Therapy & Alarm Clock]: This sleep machine has 3 timing functions, setting 30 minutes, 60 minutes and 90 minutes. It is also an Alarm Clock, help you fall asleep, stay peaceful asleep, and wake up refreshed with alarm clock function. You can adjust the hour by pressing 'previous piece button' and adjust the minute by pressing 'next track button. By pressing the volume-down button, time can be reduced. By pressing the volume-plus button, time can be increased. [13 Soothing Sounds Creating Comfortable Environment]: This white noise machine has 13 soothing sounds, including natural sounds such as spring creek melody, water drop voice, summer chirping, alpha, firewood, fan 1, fan 2, waves, train sounds, thunderstorm, heart jump, white noise sounds, lullaby. With high quality white noise & natural sound machine, enjoy soothing content to help you wind down and prepare your mind & body for sleep. [Adjustable Volume & Dimmable Brightness] : This Sound Machine let you free your hands, peace of mind sleep. Our Sleep Sound Machine has 12 levels of volume adjustable which can effectively block the noise and provide you with more accurate volume and show better sound effect, to create a perfect environment for your sleep. It also offers adjustable brightness by long pressing night light touch switch, allowing you to pick your preference, neither too bright nor too dim.