The Vaporesso NRG Tank features in a flip-type of top filling design, which is convenient to refill and can avoid oil leaking. The adjustable airflow control ensures a smooth vaping with a good taste. Besides, it comes with a GT8 0.15 ohm and a GT4 0.15 ohm, which can provide different tastes for you. The NRG Tank has a capacity of 3.5ml and a diameter of 26.5mm. There are four different colors for you to choose.