Joyetech Evic VTC Dual 75W/150W Kit $34.99
The eVic VTC Dual by Joyetech stands apart from the competition because it includes two replaceable covers which allows it to be used with one 18650 cell at 75W maximum output or with two 18650 batteries at 150W of power. This capability is similar to the RX2/3 which allows either 150W or 200W of power with 2 or 3 cells respectively.