The Crown IV has been redesigned and upgraded. The Crown IV holds up to 6ml of e-liquid with a bubble designed glass or you can opt for the 5ml straight glass! This is not only a well constructed and durable tank but is stunning to look at no matter which colour you choose! Easy to set up, with top-fill tank with that rotates 90degrees to make refilling easy. It also has an adjustable bottom airflow system! To finish off the new and improved Crown IV the coils have been developed for long-lasting flavour.