F1 - Regular Coil, Wood pulp + Cotton 0.2Ω (60-80 watts)

F2 - Regular Coil, Flax Fiber 0.2Ω (70-90 watts)

M1 - Mesh Coil, Wood pulp + Cotton 0.15Ω (70-80 watts)

M1+ - Mesh Coil, Bamboo Fiber 0.16Ω (80 watts)

M2 - Mesh Coil, Wood pulp + Cotton 0.16Ω (70-80 watts)

M-Dual - Dual Mesh Coil, Bamboo fiber  0.38Ω (80 watts)

M-Triple Mesh Coil, Wood pulp + Cotton 0.2Ω (80-85 watts)