Description: To get fresh air this summer will be easier with handy cooler,which works through the process of evaporation of water. It is quiet, easy to carry anywhere could serve, for example in the office or in the bedroom, in the kitchen or on the go. Handy cooler has a 3-speed mode fan, Indicator, a water level indicator, adjustable air outlets. Improves ventilation of the room, humidifies the air refreshing the environment through the use of a water tank of 380ml. Also great to humidify the House during dry periods and let us enjoy the cool on hot summer nights. USB interface power supply: Charging plug power, vehicle USB power supply, charging Po power supply, computer power supply, very convenient. Specification: Housing Material: ABS PP PC Electronic component Power supply: USB cable USB Cable Power: 5W, 2.1A Shell Color: Grey/Pink/Blue Water tank capacity: 380ml Work Time: 8 hours（After filling with full of water） Product Size：17*15.2*15.7cm Net weight: 740g Power：1-7W Mode：3-level adjustment Wind speed：Low mode：2.0m/s/Mid mode：2.71m/s/High mode：3.42m/s Noise index：Low mode：30dB/Mid mode：38dB/High mode：46dB Package Includes: 1 Piece Air cooler 1 Piece USB cable