Got it, charged it, packed it with leaf (Indica/Sativa hybrid) and put it on level 3. Once it buzzed I inhaled deeply three times. I tasted the leaf but never got any effects from the THC (I use it to help me sleep). Thinking that I packed it too tightly, I tried it again a few days later with less leaf but got the same results. The next day I packed it as tightly as I could and set it to level 4. Again, after it vibrated, I tasted the leaf but got no effects from the THC. This is the same leaf that I use in my water pipe and usually one hit is enough to help me pass out. The device is doing something because the leaf is brown and crumbly after I finish it. I will try it with a pure Indica strain tonight and see if that makes a difference.