BXT USB Mini Desk Fan Bladeless Cooling Fan Rechargeable Handheld Air Conditioner Multiple use mini desk fan can be both used as an ordinary handheld fan and a cooling air conditioning, temperature decrease from 2 to 4 centigrade It's a rechargeable usb novelty fan, built in environment-friendly lithium battery. No extra expense of replacing AA or AAA battery "T" bracket and detachable lanyard design make it easier to carry and use no matter in office or traveling, hiking outside The handheld mini fan can be recharged via USB cable for over 500 times,with 2 more year long life Size: 12*7*3cm/ 4.7*2.8*1.2 inch, lightweight (103g), perfect for home, office and outdoor use