I had rated this 3 stars initially. I decided to buy NEW rechargeable batteries …after I inserted the 2500 Mah Energizer rechargeable batteries this little thing came to LIFE. The draw on it is damn near the same thing as a cig!! This is a fabulous (quit smoking) tool! I bought two of them. Red/gold and gold/gold. I alternate them . You can totally do that when you literally pay a whopping 4$ per starter kit! This little guy trumps my pod systems too, as far as flavor, resistance like I said earlier is sooo good. I just cannot get over it!!!