The vape pipe has a digital display screen in the bowl of the pipe to show the user voltage and battery life. The Pulsar DL Pipe can be recharged again and again via the included USB-C charging cable for fully preparing the unit before heading back out to hit the town.Simply remove the mouthpiece to attach the 510 cartridge, screw the cart on, and replace the stem securely.The upgraded design fits cartridges up to 2mL with a max diameter of 11.5mm.