Get reliable vapors in an easy-to-use and compact unit with the HoneyStick Twist 510 Cartridge Battery. Equipped with universal 510 threading, this pen style unit is great for traveling and stashing in pockets or discreet at home use. Engage in a sesh using single button operation; just hold down and draw to enjoy! Twist the base dial to adjust the voltage and select from a full range of settings to choose just how you like it. There's even a preheat mode, great for thicker oil consistencies or preventing clogged carts. Charge up this battery with the included 510 USB charger.