Only the Eleaf ELLO tank, which comes with the Eleaf Ikonn Kit, is intended to utilize Eleaf's HW series of coils. The HW4 is rated at 0.3 Ohms for direct-to-lung vaping and has a quadruple coil architecture. The coil is rated for usage between 40 and 110W, with a suggested range between 60 and 80W. It was built with vapor production in mind.