Rechargeable via USB-C | Etsypakistan.com|Directions: Take 3 puffs and wait 20 minutes before determining if you need more. Typical usage is 3-5 puffs.Button Clicks:2x Click: Press the button on the vape cartridge twice in quick succession. This typically activates the preheat function, preparing the cartridge for vaporization.3x Click: Press the button three times to cycle through voltage settings (if applicable). Each click changes the voltage level, allowing you to customize your vaping experience.