The Eleaf Lyche tank features the ability to use the popular NotchCoil SS316L 0.25ohm Lyche atomizer heads and offers a bottom cup design to help minimize leaks. The popular NotchCoil 0.25ohm Lyche atomizer head designed by JayBo offers the ability to vape at a high wattage using the consistent evenly heated coil and offer clapton-style flavor. The Lyche NotchCoil 0.25ohm utilizes stainless steel 316L wire which can be used in both variable wattage and SS316L temperature control mode for maximum vapor and flavor. The Lyche tank features a convenient side fill option for easy refills and utilizes a bottom cup design which applies the concept of a cup design to help prevent e-Liquid leakage. The Lyche also features a top invisible airflow control valve which may be adjusted to your own personal preference. You may also build your own coils using the included 2-Post Lyche RBA head which has a PEEK insulator.