The VOOPOO UFORCE Sub-Ohm Tank presents a superior quality chassis design with a 3.5mL juice capacity. Sliding top-fill method, triple bottom airflow, and a new coil structure. The chimney section is shorter than the standard Sub-Ohm Tank. Allowing for rapid airflow channeling to maximize flavor reproduction while retaining a tremendous cloud production. The OCC coil design features an atomizer resistance of 0.4ohm with a recommended wattage range of 55W to 65W.