Love auto-draw vapes, but wish you had more control? Let your power come from your breath. The Pulsar 510 DL Auto-Draw Variable Voltage Vape Pen maximizes stealth and utilizes the power of airflow to grant users full control, no buttons needed. Let customers keep their cartridge use on the DL with this ultra-discreet device. Attach the 510 cartridge by removing the magnetic base, screwing the cart on, and replacing the base securely (Fits Cartridges diameter up to 11.5MM and length up to 59MM).This auto-draw vape will allow your customers to power the device on/off and set the voltage with just a few gentle puffs. Simply take 5 quick puffs to power the vape on, 2 puffs to activate pre-heat mode, and 3 puffs to change the voltage settings.