The iJust 21700 with ELLO Duro (5.5ml version) is the updated version of Eleaf iJust series, delivering a max power of 80 watts by single 21700 / 18650 battery. It is not just a beautiful tube-style kit though as it introduces the latest HW-M2 and HW-N2 coils that boast an innovative Leakage-Proof & Self-Cleaning (LPSC) technology. These two coils also allow a more uniform airflow and utilize porous cotton as its wicking material for fully and quickly absorbing e-liquid, providing you with an unprecedented vaping experience. The iJust 21700 implements a single button firing mechanism, in which battery life can easily be noticed by a simple glance at the LED light behind the button. In a word, Eleaf iJust 21700 with ELLO Duro is an innovative, practical and essential vape kit for all sorts of vapers.