The TF-Q4 is a quadruple coil head with a resistance of 0.15Ω
Strands of wire are wrapped parallel to each other, to create several coils wrapped together.
Rated from 40-140 watts, the coil requires serious power and will drain your battery. At 81-90 watts, the experience is gratifying.
The head produces considerable vapor, with minimal loss of flavor. Expect to go through bottles of juice pretty fast.