Been using this for a while and it really works great. I heats fast and is very discreet. Another neat feature is that you can lock and unlock the unit by quickly pressing the button 5 times. Keeps it from accidental firing up in you pocket. The battery last a long time on one charge and so do the herbs on one fill…overall it’s very efficient. I shopped around and Cannaline has great prices for everything on their site.