The Uwell Crown 4 coils have been designed for use with the Uwell Crown 4 Tank only. We stock four variants of this coil;
0.2ohm rated: 70 - 80 watts
0.23ohm mesh rated: 60 - 70 watts
0.25ohm mesh rated: 55 - 65 watts
0.4ohm rated: 60 - 70 watts
We recommend a higher VG e-liquid with these coils.