(1). Voltage: DC5V (DC adapter included) (2). Large water tank capacity: 350ml, use time 8 hours (filled with water) (3). Winds speed: 3 modes (I/II/III) (4). Noise: In less than 40 dB (A) (5). Net Weight: 850g (6). Product size: 160*140*175 mm (1). To get fresh air this summer will be easier with handy cooler,which works through the process of evaporation of water. (2). 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. (3). Handy cooler has a 3-speed fan,I ndicator,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 350ml,rechargeable. (4). Also ideal to humidify the House during dry periods and let us enjoy the cool on hot summer nights. (5). USB interface power supply: Charging plug power, vehicle USB power supply, charging Po power supply, computer power supply, very convenient.. (1). Evaporating air cooler-it sucks in hot air through the back and then passes that hot air through a moisture chamber. (2). As the air comes out the other side, it evaporates and thereby dissipates the heat, leaving cool air to blow about the room for Maximun Comfort. (1). Keep it balance and open the water tank lock. (2). Add water or water with ice cubes or essential oil in the water tank. (3). Upwards to open the wind shield, and downward the front mini water tray. (4). Press the power button , the fan start to work. (5). If you need to open the Humidification function, turn the humidification function button on.