Introducing Arctic Air: The powerful, compact personal air cooler that pulls warm air from the room through its evaporative water filter to fill any space with cool, clean comfortable air. Simply fill with water, plug it into any standard wall outlet or USB port and enjoy. It runs up to 8 hours per fill.The whisper-quiet fan and soothing night light make it perfect to use throughout the night for a comfortable sleep with built-in LED mood light that can be set to 7-colour options.