Get the ascent vaporizer which is first glass on glass parts. This sleek vaporizer is 4.50 x 2.25 x 1 inch. Asent vaporizer is powered by 2 rechargeable and removable lithium-on batteries and last up to 4 hour. Ascent is newer product of davinci vaporizer.
Pros: Uses very little product. temp setting and Vape session is very consistent. Very Discreet!!
Cons: it takes a little bit of trial and error to load the first few bowls with out Spilling and wasting product.
Comments: I have been vaping and had a person (standing up wind) wait for me to finish my "Phone" call before talking to me. He thought the Ascent was a cell phone. I'm a med patient and use this unit for at least 5 bowls during the day and what ever through the evening. Best Potable Vape I have owned Hands Down!!
Comments: I've owned my Ascent for a while now and have no complaints. You really do need to use the screens it comes with though. Just a little weed will get you WICKED high. I bring it everywhere.