Better motor, lower noiseCooling fan have better atomization technology we developed can reduce the noise to 34 decibels. The upgraded mesh structure enhances the filtering effect. Hope it gives you a good night's sleep.Water Tank & Efficient AtomizationThe upgraded atomizing motor is more energy-saving and efficient atomization. 700ml water tank is equipped with a side water level indicator. All you have to do is add water & ice cube into the tank of this desktop air cooler, plug it into USB port or power bank and TURN ON, cooler fan has touch screen function, Just put your finger on the switch button press and hold for a few seconds and turn on the air cooler, the air conditioner fan can generate all night.3 Mode & 4 Wind SpeedEvaporative Air Cooler have 3 modes (Natural Wind/Low Cool Mist/High Cool Mist) & 4 wind speeds (Low/Natural/Mid/High) with 120Up and down adjustable wind direction. The combination of multiple modes and wind speeds gives you more choices. It is recommended to add ice cubes for a better experience.2-8H Timer & 7 Color Night LightDesktop Cooling Fan have 4 kinds of intelligent timing modes (2H/4H/6H/8H),Allows you to enjoy a deep sleep or a nap without the headaches and colds caused by prolonged cool breezes. 7-color night light automatically change, cooling fans for rooms/bedroom,create a comfortable and relaxing sleeping environment(Light can be turned off)NoteThis product is designed for personal portable use with a humidifying cooling fan. It does not use refrigerants or chemicals, therefore, it should not be expected to have the same effect as a large air conditioner.