1,usb coffee cup 2.material,SBR CR + ... 4,Input power 3w introductionName,usb warm coffee cupMeterial, SBR CR,carbon fiber,denim, ... 5V Temperature,40-45 SIZE,30*9cmSpecificationsusb coffee cup set,usb heater,usb coffee cup warmer. In-set Li ... battery. Use portably. Can recharge repeatly Magnetic waterCompatible with PC hardware usb coffee cup ...