usb coffee warmer, usb coffee cup warmer, usb electronic warmer 1. Dual heat adjustment,110V,120V or 220V 1. can keep coffee or drink warmer from 60-80 degree ... at the low temperature and 110-130 degree at the high ... ,carton,40x35.5x40cm/17.0kg/ctn Cable lenghth:1.5m. usb coffee warmer, usb cup warmer, usb electronic warmer