Quick Cooling and 3 Speeds: Fulfill the visible icebox (300ml) with some ice or ice water, turn on this portable air cooler, and it will disperse the coolness within seconds. The personal air cooler has 3 fan speeds(3m/s/4m/s/5m/s), so you can adjust the wind power to meet your needs. This USB desk fan will project clean and purified airflow and distribute moisture to your surrounding air. 4 in 1 Multi Function: Small Desk Fan, Air Circulator, Portable Evaporative Air Cooler and Mist Humidifier in ONE, Pour water into a 300ml water tank, can moisturize skin and Air Humidification, keep away from dry air, you can also drop your favorite essential oil, enjoy your moist cooling summer. Ultra Quite Operation: This portable table fan can work effectively at a low noise level (50 dB). Under the quite work mode, cooling performance is still unaffected. With our personal air cooler which equipped with LED light of multi colors you can enjoy your cool and peaceful sleep on a hot summer night. Energy Saving and Eco-Friendly: This evaporative air cooler and Humidifier is Freon-free and eco-friendly. The personal air cooler can operate at low energy consumption. Its power is supplied by the USB port. One refill of water can last about 8 hours. You can use this USB desk fan all night without concern about your bills. Portable and Easy to Use: With a portable and compact design(6.5"x5.9"x5.7", 520g) , this USB air cooler can be easily moved from room to room. You can place the evaporative cooler in your kitchen, dorm, office or anywhere like. Moreover, you could also take the mini air conditioner outside. This portable air conditioner will deliver cooling, purified airflow ? wherever you need it.