Cell harm seen in lab tests of e-cigarettes...

[Nimaz]

I wish I knew what 50% aperture for the airflow meant. Also, 11 wraps to reach 1.6ohm in a kayfun, sounds like a really hot vape. This one did seem to be better designed though.

50% air flow opening is relative to the maximum air flow opening. 50% or half of the maximum air flow opening.