Inhale-activated for intuitive, consistent performance 15 sec Preheat Function countdown to liftoff Three voltage settings (2.4V / 2.8V / 3.2V) for flavor or cloud preference USB-C charging + 500mAh capacity keeps users powered all day Fits 510 cartridges from half grams to full grams and up to 14mm Durability in assorted colors - Blue, Purple, and Black