Here my review of the Vapecode TN01 portable e-nail, it comes in a box with: The nail and a cord, a battery pack, a charger and 2 replacements atomizer (third is arleady on the nail).
First I need to charge the battery pack, it tooks to me +6hours to get the green led on the charger.
To use you need to connect the nail to the battery, place your nail on a a rig (10, 14 or 18mm) and to activate there is only one button, no heating setting.
The difference with a nail is you need to put your dab on the cold nail and you press the power button to vaporize (similar to a dab pen).
The load must to be small, avoid large dabs!
To get a better taste (and low temp) I use the pulse method, if you stay on for a while you get a very high temp dab with a nasty taste, pulse avoid to turn the heater red hot.
I like the ability to take it out quickly, take a dab and get back in a safe place without thinking about a cord and a plug, it is really efficient, absolutly no pooling, minimal splashes, large airflow.
But I think it's a large step behind a true e-nail, especially in term of taste and efficiency, you can't get this long and flavorfull deep inhalations a low temp e-nail offer to you.
Here a pic of my setup (TN01+D020):