Power supply mode: rechargeable, USB, battery
Function: Timing, music function
1. 6 white noise scenes: light music, raindrops, forest bird song, thunderstorm weather, ocean waves, white noise
2. Automatic timing selection: 15, 30, 45 minutes
3. Volume up and down control
4. Lightweight and portable, easy to travel and carry
5. The beautiful sound makes you fall asleep peacefully