20 Looping Sleep Sounds: White noise, rain, ocean, stream, bird sounds, and more! Choose your preferred sound, and the CoocAni white noise machine will create a more relaxing environment for babies, children, and adults. Precise Volume & Timer Settings: The sound machine can be set for continuous play or with an auto-off timer for 60, 120, and 240 minutes. Plus, it features 10 levels of precise volume control, so you can customize your environment for optimal comfort. Portable Bluetooth Speaker: CoocAni is always innovating, so this isn't just a sleep noise machine, it's also a Bluetooth speaker! Connect your phone or computer via Bluetooth, and the compact design makes it easy to take outdoors or while traveling. Night Light with 6 Adjustable Colors & 5 Brightness Levels: 5 brightness levels. Perfect for sleep and reading. 6 different colors make this a user-friendly white noise bedside lamp. Light and sound can be operated separately. The device saves your last sound, light, timer, and volume settings, so you don't have to reset it every time. Portable Travel Companion: This long-lasting noise machine has a rechargeable 1800mAh battery that runs continuously for 20 hours on a full charge. Plus, the sleep machine comes with a USB-C cable for charging. No need to worry about power issues when you travel!