The Vape Pen is simplicity and dependability at its best. This small pen is draw activated meaning all you do is inhale through your cartridge of choice, which means no accidental button activation in your pocket or bag. These pens are compatible with most 510 thread cartridges and come with a USB to thread charger. Best of all, these devices are made by Jupiter, a trusted vaping brand, so you know you are purchasing quality. With this easy to use, all-in-one, mechanism your Butler ensures this little pen will give you an untroubled and simple vape session.