The Aspire Nautilus Mini is the next generation of tank systems. Made of stainless steel and Pyrex glass, the Nautilus Mini uses the Aspire “BVC” (Bottom Vertical Coil) atomizer technology. This new technology is designed to last longer while still giving users the purest and cleanest taste from e-liquids. It also includes an improved four-port adjustable airflow system that is both user friendly and reliable. This unique four-port system allows the user to adjust the draw, warmth of vapor, and amount of vapor produced. The design also makes it easy to carry, install, and refill. Note: Compatible with any 510 threaded device (eGo).