MX1 0.12ohm: Atomizer Resistance: 0.12ohm. MX1 0.15ohm: Atomizer Resistance: 0.15ohm. MX2 0.2ohm: Atomizer Resistance: 0.2ohm. MX3 0.15ohm: Atomizer Resistance: 0.15ohm. Includes: 5 x Replacement Coils.