1,promotional usb warm cup 2.material,SBR CR + carbon fiber,USB cable,denim 3.Temperature 40-45 4,size,30*9cm namepromotional usb warm cup voltage 5v ... power 3w size 30*9cm temperature 50-55 colorred material SBR CR,carbon fiber,USB cable,denim specification keep cup warm ... cecious based on muti-funtion for keeping the heat. promotional usb warm cup