The Joye eCom comes with variable features for wattage and voltage. There is an upper air inlet and outlet that reduce the chances of leakage. The new atomizer C2 head can produce loud clouds under high voltage in a short time span. The adjustable voltage is applied by eCom Mega and comes with a 1600mAH built in battery. eCom supports Bluetooth and can be rated as an intelligent device that can be customized.. Along with that, eCom-C comes with an atomizer C2 head. It produces a heavy vapor a high class vaping experience.