The Boundless Terp Pen XL is the exciting transformation of the original Boundless Terp Pen. The redesigned coils feature threading as well as the cap to hold them firmly in place. The cap also features a new quartz storage compartment that allows you to store your concentrates and load more easily on the go! The new battery features faster charging and a new LED battery life indicator that shows the battery level by color by tapping near the USB port. Choose from 3 voltage settings for heating by tapping near the USB port, and see the LED light up to indicate the voltage chosen by taking a draw. The Terp Pen XL is somewhat larger than the original Terp Pen, but incredibly discreet and easy to travel with. Enjoy the button-less, ease of the Boundless Terp Pen you’ve come to love in a bigger, more luxurious way!