Uwell Crown IV Coils (4-Pack)Replacement Coils for the Uwell Crown IV come in three options: Dual SS904L Coils available in 0.2ohm and 0.4ohm that utilizes high-quality steel and organic cotton for long lifespan and flavor, and the FeCrAI UN2 Mesh Coil. Comes in a pack of 4. FEATURES : 0.2ohm Dual SS904L Coil· Wattage Range: 70W - 80W 0.4ohm Dual SS904L Coil· Wattage Range: 60W - 70W  0.23ohm FeCrAl UN2 Coil· Wattage Range: 60W - 70W