xlpace LED USB Fan Clock Mini Flexible Time with LED Light - Cool Gadget . Attention: Only XlpAce Sell The Original USB Fan. . Charging time: About 2 - 3 hours; Using time: About 3 - 5 hours . Plug and play Safe and soft PVC fan blades; Flexible metal neck; Time is stored and remembered, even when switched off; The flexible metal neck allows for adjusting the direction of the fan . Can be connect with mobile phone . Size: 12*9cm/4.7*3.5 inch