The Eleaf iJust NexGen Starter Kit offers a simple and easy to use design while offering a flavor and cloud producing sub-ohm vaping experience. The iJust NexGen offers a built-in battery capacity of 3000mAh and a built-in e-liquid capacity of 2.0ml which may be increased to 4.0ml using the included expansion glass. The iJust NexGen features a simple one button design with a output wattage of 50 watts. The tank features a retractable top fill system that allows for convenient refills. Dual adjustable airflow slots allows you to adjust the airflow down to your personal preferences. The iJust NexGen utilizes Eleaf HW atomizer heads which provide a well balanced stream of flavor and vapor production. This kit includes (2) HW1 Single Cylinder SS316L 0.2ohm atomizer heads that provides a large amount of clouds and flavor.