The Authentic SMOKTech SMOK V12-X4 Coil Heads are for TFV12 Tank in 0.15 ohm resistance. The V12-X4 coils is rated for 60~220 watts and best for 100~170W.
V12-Q4
0.15ohm Quadruple Coils
Brings smooth taste
60-190W/Best: 90-160W
V12-T12
0.12ohm Duodenary Coils
Cloud vapor chasing
60-350W/Best: 130-200W
