Joyetech CuAIO D22 starter kit impresses us with a 1500mAh in-built battery and 2ml e-liquid capacity which can be expanded t0 3.5ml. Being all-in-one design, it has a flip to open filling system and precision top airflow control. Packing with new Joyetech ProC-BF series heads, it provides a more restricted draw for mouth to lung vapers and a pure flavor of e-liquid.