ENERY-SAVING & ECO-FRIENDLY - This evaporative air cooler is Freon-free & do not contain refrigerant and eco-friendly, Low Energy Consumption same as the power consumption of a light bulb, Uses much cheaper than running a freon air conditioner in Hot Summer Days. Its power is supplied by the USB port, One refill of water can last about 8 hours; You can use this personal air cooler all night without concern about your bills LARGE CAPACITY WATER TANK - This Small air cooler With a large 500 Milliliters water tank, Add ice cubes and water to the water tank, Cold air can be sprayed continuously for 2-3 hours to keep your body cool at night for a good sleep. Also, the Water Shortage Protection Function will change it to natural wind while the water out, so no worries when you fall asleep. Outperformed most of the regular fan on the market when cooling down PORTABLE & EASY TO USE - With a portable and compact design, 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, it operates at low noise, and will not disturb your life, working and sleep, you could also take the mini air conditioner outside, This portable air conditioner will deliver cooling, purified airflow - Wherever you need it THE - The , compact and portable evaporative air cooler is is more suitable for personal cooling and perfect for bedrooms, dormitories, offices, rooms, office, cars, outdoor and travel. It is the , your family and friends in summer. color: White material: plastic Package Contents: 1 x Mini desktop air cooler Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.