The Crown Tank by UWell, one of the most well balanced and well regarded tanks in the market. The Crown Sub-Ohm Tank features support for top and bottom filling, allowing it to be filled easily and conveniently based on user preference. The coil options allow for a range of 10W all the way to 120W, utilizing the appropriate coil. The more than ample dual airflow located at the base of the device allows for easy adjustment due to the adjustment ring. The 4ml tank allows for longevity of use, and coupled with the two options for filling allows the Crown to be used and refilled easily and without hassle.