With three in one function of refrigeration, humidification and air purification, the three wind speed can be adjusted. 2. Built in 7 color LED atmosphere lights, can be used as a night night sleep lights function. 3. The process of using is mute, refrigeration and environmental protection without freon. 4. Built in water tank, once full, can last for 8 hours. 5. USB plug adapter or USB socket. USB line length: 190cm 6. Suitable place: offices, home living rooms, kitchens, bedrooms, bathrooms and family construction areas.1. With three in one function of refrigeration, humidification and air purification, the three wind speed can be adjusted. 2. Built in 7 color LED atmosphere lights, can be used as a night night sleep lights function. 3. The process of using is mute, refrigeration and environmental protection without freon. 4. Built in water tank, once full, can last for 8 hours. 5. USB plug adapter or USB socket. USB line length: 190cm 6. Suitable place: offices, home living rooms, kitchens, bedrooms, bathrooms and family construction areas.Three functions: refrigeration, humidification and air purificationArea of coolness is limited, it may not cool an entire standard room, but it does cool a considerable area in the roomBuilt in water tank, once full, can last for 8 hoursUSB plug adapter or USB socket. USB line length: 190cmThe three wind speed can be adjusted