The XROS 3 is equipped with a large 1000 mAh battery, takes 2 mL top filling pods with built-in coils, and has a button and an airflow slider. It is powered by the latest edition of the AXON chip and utilizes the COREX heating coil tech that is claimed to keep consistent flavor for longer. Vaporesso Xros 3 Mini – Quick Start Guide: 1.Carefully remove the mouthpiece from the pod. 2.Locate the filling port. It`s marked in red. Do NOT fill down the centre hole! 3.Push the E-liquid bottle nozzle through the fill port and into the pod chamber.