The 18V X2 LXT Cooler/Warmer Box is ideal for use on the job site or on the road. The cooler has four cooling modes capable of holding constant temperatures of 15degreesF, 30 degreesF, 40 degreesF, and 50 degrees F, while also having two warming modes capable of 130 degrees F and 140 degrees F. It operates using one 18V LXT battery with the option to insert one additional battery for extended run time (batteries not included). It can also operate from a 12V/24V vehicle plug, or corded AC power. There is a large, easy-to-read L.ED. display allows you to check the temperature and remaining battery time. For added convenience, it has a USB charging port to provide power to common devices like phones and tablets.