Makes it stand out as the best cooling fan in the market. with the mini-cooling system behind this fan, it transforms water into cool air that is blown to the room to make you feel the power of cool which is in line with the lontor slogan. with lontor air cooler, you will experience coolness like never before. though this experience cannot replace the conventional air conditioner but if used to specification (especially with cold water or ice), the experience will be great in the room where it is used. it last long without power supply note: (1) the fan's cooling function is most enjoy when cold water or ice is put into the water chamber (2) the fan must be charged up to eight (8) hours before first use to enjoy. key features battery capacity: 12v 4800mah fan: 3speed settings water tank capacity:2.5L water cooling function remote control