The Uwell Crown 4 IV Replacement Coils offers a highly advanced atomizer technology, featuring SS904L material and double helix mesh designs with self-cleaning technology. Features the FeCrAl UN2 Coil, SS304 UN1, and Dual SS904L. Compatible with the Crown 4 Tank.

The Crown 4 replacement coils come in a 4-pack, and feature UWELL s patented self-cleaning technology which collects excess ejuice in a condensation chamber near the bottom of the coil and vaporizes it. This allows for less frequent cleaning of your Crown 4 Tank. These coils also have UWELL s patented Pro Flavor Core Optimization System (or Pro-FOCS). Pro-FOCS recycles the air through the coil two times during intake in order to saturate each puff with as much flavor as possible.