Built in a 6h auto-off timer, no need to set, the whole functions will turn off automatically after 6 hours of using.
360 Rotation
Press rotation button to turn the rotation on.
Powered by a USB cable or 4*AAA batteries(batteries are not included). Please note that when using a USB cable, you need to remove the batteries first, to avoid burning the circuit board.
From a smoke-free/pet-free home
Please check description and pictures carefully