Breathe Clean and Safely: Brizer's Glacier personal air conditioner portable will turn your hot personal space into a refreshing atmosphere. Allow air circulation in closed confining areas while lowering the temperature to a comfortable temperature.Ease-of-Use: Simply place the refrigerated filter in its slot and add water into the tank then plug it into a USB port or power bank and turn it on. Make sure not to move the air cooler once the water tank is filled. Refill the water tank once every 8 hours. We recommend ice water for an even cooler effect.Refrigerator Safe Filter:Unlike other competitors, Brizer's mini portable air conditioner has a replaceable and refrigerator safe filter. This can ensure your family is always breathing in cool, quality air. Our filter is also refrigerator safe, simply place the damp air cooler in a zip lock bag and let it sit in the refrigerator between 15-30 minutes.Light Weight and Convenient: Brizer's lightweight portable air cooler was made for use on the go. Use it for your office desk fan, nightstand, or on your home living room table. With a built-in desk light, it can be used late at night too. It can even be used for camping trips, simply connect the mini AC to a USB battery pack and enjoy the cool air! We made this portable air conditioner, compact ( 7.5" X 6" X 7") and lightweight to take with you anywhere! Brizer Glacier Mini AC Portable Air Conditioner for Small Room- Indoor Personal Air Cooler, Air Conditioner and Mini Air Cooler, Cooling Device Water Cooled, Portable AC- Evaporative Cooler for DeskCustomer Satisfaction Guaranteed: We back our mini air coolers with 1-year buyer assurance and lifetime support. Please contact us directly, and we will help you in any way we can.