The "Iso" by Nucleus has all the features one would want in a portable vaporizer. It has 3 temp settings so you can have smooth, small hits at a low temp, or raise it up higher for bigger, larger hits. The different temperature settings are indicated on the unit with different colors. This is a good unit for an awesome price.
Nucleus Iso Dry Herb Vaporizer
3 Temperature Settings: 360, 380, 420
For Dry Herbs
Includes Cleaning Brush, User Manual, Extra Screens