This pen kit is an innovative design consisting of an extendable mouthpiece and a single battery (1400mAh). It is the best choice for wax lovers. You can easily and conveniently replace the coils with the chamber door. You can expect an amazing vaping experience and bigger clouds with the presence of QDC and QUAD coil. It also has a double compartment jar that offers enough area for discreet storage. Lastly, it is small, which make it easy to carry.