The Pebble is a great idea, small, easy to use and handy. I switched from smoking in May 17 to vype pebble and never touched a cigarette any more. But... And that's a big problem. Since then I bought 5 Pebbles and they all get broken. I simply an constructional issue. Sometimes the caps are dripping liquid. And this liquid drops through the small holes inside the body of the pebble and inside the depression switch, so that the switch gets out of funktion. The Vype customer care always changed the broken pebble into a new one, but now they say it's not possible anymore. So I give them all back to vype to get my money back. I really loved the pebbles, but the is a need to change the construction from a automatic depression switch into a version with a normal, mechanical switch as used in most of the other vaporizers.