This monstrous, yet mini powerhouse, is constructed of durable stainless steel. It incorporates all the main characteristics of the original and highly popular Smok TFV4, integrating an improved double-layered drip tip and airflow control in a small form factor. It also features a top fill design, a hinged top cap, pyrex glass tank, and has a 3.5mL e-liquid capacity. And for huge performance, it also offers quad air slots, which are located at the drip tip and its base. In addition, it uses a dual clapton coil at 0.35 ohm, which you can fire up to 90 watts, and comes with a patented sextuple coil at 0.4 ohm, which can reach up to 100 watts, as well as an included RBA Head that has a prebuilt clapton coil pre-installed. If you are looking for the most customizable tank currently available on the market, with 10 atomizer options ranging from single coil RBA to a six coil head, look no further.