Arctic Air Cooler - Portable Air ConditionerIt's a powerful, lightweight and compact air cooler that you can take anywhere. It cools, moisturises and cleans the warm air around you to make it a breeze of fresh, cool and clean air!It works by pulling warm air from the area which then passes through the evaporation water filter and come out as cool, clean and comfortable air.√ Efficient on power, high-quality, low noise√ Compact and portable, you can travel with it but make sure you position it on a stable place√ Purifies, humidifies and cools the air around you√ Has three different wind speeds. The higher the wind speed, the more energy it will consume and the cooler the air.√ Water tank lasts up to 8 hours and it's recommended that you add water to the tank.√ Can be plugged into a USB port or traditional wall socket. NOTE:This product is not meant to cool your whole house or your entire room. It's meant to be placed on a table or desk very close to you and keep you cool. You will start feeling the cool air some minutes after the filter absorbs the water. It will not produce ice cold air like an A/C unit but it will definitely produce air that's colder than the normal air in your bedroom.Furthermore, it doesn't come with any rechargeable battery or power bank but it consumes low energy and so very energy efficient. You can buy a separate and strong power bank for it if you like.