the pen-sized modelOne fits in your pocket. It's the world's smallest butane vaporizer..modelOne gently heats tobacco or herbal blend pods just enough to release nicotine and natural flavors in a rich, satisfying vapor. Because our ingredients are too good to burn..it's vapor, not smoke. It's a difference that not only you'll notice, but everyone around you will too. No ash, no foul smell, and it's legal to use in most indoor locations. So enjoy!.modelOne uses single serving Ploom pods pre-filled with the highest quality ingredients. The recyclable self-contained pods are clean, convenient, and perfect every time..just like most modern lighters, modelOne is powered by butane.