Question: what coils are compatible with the crown 4?
Answer: Crown 4 Coils Uwell Coils compatible with the Crown 4 Clearomiser by Uwell. The 0.20 ohms and 0.40 ohms are dual coils in parallel, consisting of SS904L, a resistive wire which is resistant to corrosion by preserving good quality of heat. The SS904L Coil can also be used with the Temperature Control in the SS Position.