The main difference between Electrical Dab Rigs and Wax Pens is that Electric Dab Rigs are much bigger than wax pens. E-rigs often have much larger atomizers and batteries with some more user-friendly interfaces, such as the HD screen on the Focus V Carta 2. For the more portable option, choose a dab pen. For more power, choose an E-Rig like the Dr. Dabber Switch.