Smok Priv One is an all-in-one kit which adopts a built-in tank that shortens the overall height of the kit to offer you convenient operations and portability. It has 920mah built-in capacity which will provide long run-time vaping. The top airflow system ensures massive clouds of vapor. With its compact design and ergonomically designed big fire key, it will give you comfortable hand-feel. Besides, its swivel top cap and sealed leak-proof atomizer base will bring you convenience when refills. There are four colors available. Priv One adopts environmental friendly oil injection and Polishing technology.