The RPM C Kit is both elegant and portable. It is powered by a built-in 1650mAh battery with a maximum output power of 50W. Its adaptable stepless airflow control allows for airway modulation of any size. The 0.69-inch OLED display screen clearly displays vaping data. It works with the RPM C Cartridge (4ml, top fill) and the RPM 2 Coil. The bundle also includes RPM 2 Mesh 0.16 Coil (25W-50W) and RPM 2 DC 0.6 MTL Coil (12W-25W).