1)elegant appearance 2)will have the most suitable temperature for drinking hot coffee 3)built in lithium battery,can move it USB Coffee CupDetails: ♣built-in li-battery,can move it ♣can recharge repeatly ♣in-set heating and warming function ♣will have most suitable temperature for drinking hot coffeeSpecification ♣power:3w ♣voltage:3-5v ♣product dimension:64*64*152mm(W*D*H) ♣with usb cable ♣ ...