Honeystick Elf is appropriate with Virtually all 510 cartridges. It's buttonless and attract-activated, powered by a 350mAh battery, and its voltage output is 3.7V. The Elf cart battery and other 510 thread attachments are linked by using a magnetic adapter ring. The boxy device styles wraps all around your cartridge https://www.lookah.com/vaporizers/510-thread-battery/