Mini USB/ AA Battery Powered Handheld Air Multiplier Bladeless Refrigeration Fans Desktop Cooler (Purple) Power saving design: the battery can drive the cooling fan for up to 5 hours. Great for cooling air in office or home. More safety and convenient. Lightweight and portable design allows for easy carrying and use especially while traveling Flexible and adjustable gooseneck directs the breeze to blow into the exact direction as you desired. Ultra-quite design,and EVA material,very soft, security and environmental protection, Great gift for kids.