The Persei Vaporizer was designed for heavy duty use. Edit: Please see the Persei Vaporpedia Article as well. The herbal attachment called The 8 is being worked on right now, it will be available soon. Great things take time to make. Currently the Persei vaporizer is a variable voltage vaporizer, it can take 18650 3.7v, 2x rcr123 for 6.0 volts, and 2x18350 for total of 7.4v. The Persei will have all the attachments known to man through this year. The kit includes a single cartridge top, double cartridge top, 1x 18650 battery, 2x Stainless Steel Mouth tips Custom designed for current cartridges, 1 cartridge, 1 charger, and manual. 18650 will provide over 200+ puffs before it needs to be recharged. 18350 will provide over 100+ This is how you adjust for different battery sizes. It will get a wall plug for the office user in mind, It will get a nice little upgrade later on we are keeping our lips tight on this one. Let the discussion begin. oh and here is a sneak peak on the nail cartridges that can do all concentrates. And a preview video here.