For a good time: To turn on/off: Click stylus button 5x times (lights will illuminate when on) To change modes: Click the stylist tip 2x Purple (2.4V): Low heat setting, for mellow flavorful hits Orange (3.2V): Right in the middle Green (4V): Much more potent draw Blue: Dab mode, for use of concentrates and dab attachments To activate the pen in all modes (except for dab) simply give gift it a puff and the light color will correspond with your selected mode To charge: Screw on the charger and plug it into any USB port (hot tip: if if you're in a hurry, swipe your finger over the "O" logo to charge in just 20 minutes flat) To check the battery life: Click stylus button 3x (green indicates fully charged, blinking lights indicate low battery)