Uwell Crown IV Dual SS904L Coil utilises high quality steel and organic cotton, 0.2ohm and 0.4ohm available. Both of them have long lifespan and offer you better flavour. Dual SS904L coil is only designed for Crown IV tank.
Uwell Crown IV Replacement UN2 Mesh Coil features 0.23ohm resistance, it can enhanced flavour than regular coil. It is designed for Crown 4 / IV tank.