White Noise USB MachineIts time to relax and fall asleep easier Tossing and turning at night? Cant fall asleep for that afternoon nap? Tune out the rest of the world and immerse yourself in the sounds of nature or still, white noise with our soothing White Noise USB Machine. Up to 36 hours of peace Stress less and transport yourself to a different place with over 24 hours of sound play time. All it takes is 1. 5 hours of charging time to fully power up this white noise