It is the pinnacle of truly leak-proof design within a competitive Sub-Ohm market, featuring an anti-leaking installation with condensation protective design, double-glass top airflow system, 4mL juice reservoir with threaded top-fill, and the introduction of top-loaded D1 Coil Technology. The anti-condensation has been implemented into the base to relieve back pressure and virtually eliminate possible flooding. It implements a unique airflow delivery system of its kind with double-glass airflow with three hidden airslots. The air channel enters through the adjustable airslots at the top cap, which are then funneled down between the two glass tubes to create an effective passage to the atomizer base, providing an unprecedented vapor production while retaining a flavor-enhance experience. The premade coil unified with the top tank section instead of the base, resulting in simple coil changing without emptying the tank.