Disposable vape pens usually come in one piece. Inside the device is a battery to power up the shisha pen, an atomizer to vaporize the liquid solution, and a flavour cartridge with the liquid solution of your choice. Disposable hookah pens are intended for one-time use only. This means that there’s no assembly needed and you don’t need to charge it. You will know how long the product will last by checking the number of puffs.