Ah yes, the EGO-T. The EGO-T is any advanced Vaper's dream model, which features an entirely new atomizer and cartridge system. The EGO-T Cartridge features a large liquid reservoir, which can hold up to nearly 2ml of Liquid! The EGO-T's unique atomizer is designed to pierce the cartridge and slowly absorb the liquid reservoir, all the while allowing you to observe how much liquid you have left inside your semi-transparent cartridge.