The SMOK Baby V2 A3 Coil is compatible with the TFV8 Baby V2 Tank. It features three separate heating coils and three larger airflow slots at the bottom for increased airflow. Constructed from stainless steel, the coil has a resistance of 0.15ohm. Recommended wattage is between 80W and 130W, with optimal performance between 100W and 120W.