Can be added essential oil,spread pleasing fragrance,relax body and mind. Prevent dry burn,automatically power-off when the water used up. Timing shutdown,timed for 1/3/5 hours,convenient for use and save energy. Silent humidification with decompression raindrop,helps sleep well at night and relieve stress. Timing Button Operating: 1. Click the timer button once to set the timer for 1 hour, and the 1H indicator light turn on. 2. Click the button again, set a timer for 3 hours, and the 3H indicator light turn on. 3. Click the button for the third time, set the timer for 5 hours, and the 5H indicator light turn on. 4. Click the button for the fourth time to cancel the timer, and the power on indicator light turn on. Cycle. WARM DISCLOSURE: 1. Do not exceed the maximum water level when adding water to avoid affecting the fogging effect. 2. Children need to use it under the supervision and guidance of adults. 3. When not in use for a long time, please unplug the power adapter and pour out