Timer function and Silent Wind Mini evaporative air cooler is equipped with 2-4H timer function,so you no longer have to worry about headaches caused by long-term exposure to cold air.Evaporative Air Cooler with a noise level below 40decibels, the fan is very quiet, which means you can use it on desk while working, without the constant annoying and distracting noise. Mini air conditioner very light, even with the water added ,easy to carry.Its timer function promotes energy efficiency, and the silent fan operation ensures peaceful sleep. Efficient Cooling&Powered by USB-C CablePortable air conditioners are equipped with a high-performance motor and unique air duct design. The misting function also has 3 different levels, It gives you plenty of control over how cool and humid you want your room to be. Air cooler fan is powered by USB-C cable, which is convenient. It does not have a battery so has to be plugged in to work.it can be powered by mobile power, laptop, adapter, computer, car charger.(Please ensure that the outputcurrent of power supply equipment is greater the or equal to 2A) Adjustable 3 Speeds& 7-color night lightThe personal AC cooling fan has Low-Medium-High wind,Adopt 3D spiral cut fan blade, effectively improve air efficiency, with humidification and cooling function, instant cooling.speeds to adjust according to your needs. The portable AC also has 7 different color cycles of soft light, which can make the room more beautiful and romantic and create an ideal sleeping environment.3 adjustable fan speeds for personalized comfort, and a 7-color night light for ambiance. 700ML Large Water Tank& Handle DesignThis portable air cooler boasts functional features like a 700ml water tank for extended cooling mist, that it has a handle to make it easy to carry it around without spilling the water all over the place.This mini air cooling fan is quite neat and versatile. It is not too large or bulky (approximately the height of a water pitcher) and is perfect for tabletop purposes.(Our small air conditioner has a water shortage protection function, and will automatically switch to natural wind mode when there is a shortage of water) Upgraded mini coolerUpgraded evaporative portable air cooler boasts functional features with 3 cool mist & speeds, 7 night light &timer,it is quite neat and versatile and light and compact, can be placed in a variety of spaces. Mini air cooling fan is suitable for bedroom, living room,study room,kitchen,office,car ,camping, cabin vacations, and more.The mini air conditioner is a game-changer. It is easy to use and cools air flow easilyare great for those hot summer days.If you have any questions during use, please feel free to contact us.We will do our best to help you.