The Nautilus X represents the peak of the Aspire atomizer development curve. Specially designed to provide a premium vaping experience with increased flavor, and unique U-Tech coil technology for all-new airflow performance, this is the future of micro tanks. The Nautilus X has a quick & clean top-fill tank. Refill your 2ML tank in literally seconds. You can drip, drop or pour your E-liquid into the Nautilus X tank and be back vaping in no time. The Nautilus X features adjustable Top-Airflow. Not only does the Airflow Control (AFC) help you to change the airflow in the Nautilus X, Adding Top-Airflow ensures your tank will not leak from the bottom over time.