Measuring 22mm in diameter and 45mm in length, the Nautilus X has a 2 milliliter tank capacity, accessed and filled via a top threaded refill system. The Nautilus X’s marquee feature is Aspire’s new U Tech Coil Technology, an innovative and highly effective method of airflow in which the airflow will enter via the upper chamber, travel down the first coil’s vertical structure then return up through the center of the other coil structure before exiting the drip tip. Paired with the specifically spaced coils of the Nautilus X, the result is one of the most flavor intense vape experiences available on the market today.