I have one and use it alot when Im at the VA hospital hanging around all day just to say a Doc for 20 minutes....I hang in the smokeing section just to visit and nobody can even smell it........I carry around 5 batteries with me all times LOL.........they work great.....hits as good as my Kia vape ...not as hard as a Dauda or Silver surfer but pleanty of vapor is there.........unlike those you have ot use a ligher on this is acurate on temp...not adjusting....just snap batter in place wait just a bit yhou will see the vapor in bowl and hit that puppy........sturdy well made wont fall apart on you like cheap crap........less is more in packing the bowl.........can put in pocket right away wont burn ya......uh buy spare rechargeable batteris with high milliamp rateing at least 2100 and your good to go.....hope this helps.