Nautilus X is a good example of the technological evolution of Aspire atomizers. Specially designed to provide a premium vaping experience with maximum taste. The atomizer comes with the U-Tech coil technology and a brand new airflow system. This atomizer is the future of micro-sized atomizers. It features adjustable airflow, leak-proof design, 2ml capacity (expandable to 4ml), U-Tech technology and low profile. The Nautilus X 1.5-Ohm coil can be used for mouth to lung or for direct lung vaping (for beginners) as it provides higher airflow. The 1.8-Ohm coil features smaller airflow and is designed only for mouth to lung vaping - for an even better taste experience.