E-cigarettes require you to press a button while inhaling. Be careful not to inhale too hard, as this will result in less smoke. This is because when you inhale too hard, the e-liquid is drawn directly into your mouth, without being atomized by the atomizer. Therefore, puffing gently can actually produce more smoke.
E-cigarettes are electronic devices that mimic cigarettes, with the same appearance, smoke, taste, and feel. They use a rechargeable lithium polymer battery to power the atomizer, which heats the e-liquid in the tank, converting nicotine and other substances into vapor for the user to inhale.