The Smok Nord has theree coil options available currently; two offer a mouth to lung (MTL) style of inhale and the other is a direct to lung style (DTL) of inhale.
These three coils make the Nord a surprisingly versatile little device. The 0.6ohm mesh coil for sub ohm offers users an impressive level of flavor and cloud with a reasonably open airflow. The 1.4ohm regular coil tightens up the airflow and reduces the volume of vapor created, which is very useful if you are using salt based nicotine (salt nic). The 0.8ohm mesh coil combines the best of both worlds, offering the increased flavor and vapor production of a mesh coil with the tighter inhale of the MTL coil.
These coils are sold in a pack of 5.