The i Sub Apex has been created with expertise & passion to enhance your personal vaping experience; perfect for mouth to lung vaping for consistent full flavors, deep hits for huge clouds, or a great mix of both. The Solid Spin Top Fill System refills quickly & cleanly & the raised adjustable airflow minimizes leaking & maximizes performance. Compact & quiet, the sleek high quality 100% Stainless Steel body & Pyrex Glass tank have been engineered for durability as well as outstanding flavor & cloud production. The i Sub Apex is compatible with all 2.0Ω, 0.5Ω and 0.2Ω i Sub Coils which are made with high quality 100% Japanese organic cotton for fast wicking & pure flavors. Innokin’s advanced new design, Prism Flavor+, boosts flavors to bring out the best in your favorite eliquids. The patented Prism convection airflow system draws in air through the dual, raised, adjustable intakes, down into the heated outer chamber & then.. .