This amazing portable air cooler is perfect for those summer nights or warm days in the office, when you need something to help you sleep during the warmer nights or to use while at home or work, this air cooler is perfect use for kids bedrooms too. The portable air cooler is the perfect solution for your hot and sticky nights or just need a cool breeze, it is lightweight and very portable this is perfect for anywhere on the go, all this requires is a USB connection. Using water this cools and humidifies the air as it runs, with a capacity of 500ml and with a 3 speed fan (High, Medium and Low), you're bound to find the right temperature to suit your needs. You need to plug the air cooler into a USB port (the USB is included) via a laptop or adaptor plug (not included). The unit has running time settings too, you can select from the high setting for up to 8 hours run time, or Medium setting giving up to 10 hours and a low setting giving you up to 12 hours of use. There is also a night light function to give a nice relaxing glow at night, the default setting is with the light on and high brightness, 1st press gives you the light on but with low brightness, then 2nd press turns the light off. Features Include: Lightweight and portable 3 speed fan 500ml water capacity Night light function USB power lead (included) The cooler measures H16 x W16.5 x D14.5 cm approx.