The 0.15ohm Baby V2 A3 Coil has three separate heating core and a range of 60W to 100W. Comes in a pack of 3. SMOK TFV8 Baby V2 Replacement Coils Features: Performance-Grade TFV8 Baby V2 Coil System; 0.15ohm Baby V2 S1 Single Mesh Coil; rated for 40-80W, recommended 60-70W; 0.15ohm Baby V2 S2 Quadruple Kanthal Coil; rated for 30-70W, recommended 45-60W.