I have found that this mod is a good all round workhorse. I personally use the 21700 batteries for maximum longevity although you have the choice of either 20700 or 18650 batteries. The display is nice and bright and easy to use and the menu is straight forward to operate. I can recommend this device to anyone who wants an above average mod.
It`s a good mod. It is versatile. Can use three types of batteries: 18650 (with included adaptor), 20700, 21700.
The display is bright and easy to read. In MTL vaping the 21700 batteries last for 2-3 days at least.
Although the case is mostly made of plastic, the module is robust.
Does not have smart VW mode (only in TC/TCR mode).
Nice mod at a nice price, good features and a nice range of colours to choose from. It has a good feel to it and is nicely weighted for a dual battery mod.
Made for using 20700 or 21700 batteries but comes with an adapter for 18650's although this seemed a bit hit and miss as to whether the batteries were tight enough in the compartment!
What I mean by that is, I have a range of 18650's and found that some were loose and rattled around a bit, so it kept cutting out, whereas others were fine.
Fortunately I also bought some 21700's for it, and once charged, used them instead. They last a lot longer as you would expect, I'm quite a heavy user and these lasted me for 2 days before needing to replace them.
Overall, it's good value for money, with a 220w limit it will drive pretty much anything you want without frequently changing batteries.
I can happily recommend the Aspire Dynamo.