The Crown 4 is the latest generation sub-ohm tank in the popular series by Uwell. The 25.7mm wide base and 28mm bubble tank combine for an e-liquid capacity of 6mL, and the slim tank option included offers an e-juice capacity of 5mL. Large fill ports are covered by an easy to remove quarter turn lid topped with a 510 delrin and stainless steel drip tip, and adjustable triple bottom airflow channels allow you to customize the draw. The Crown IV also uses a new series of press fit coils based on the popular Crown 3 series, with a patented self cleaning base that re-absorbs e-liquid caught in the base of the chassis, preventing leaks and reducing waste. A 0.4Ω dual SS904L coil rated for 60-70W is pre-installed, and a 0.2Ω dual SS904L coil rated for70-80W is included.