You dont need this. You don't. Honestly, you don't.
You should get it though. If you're here you have that gurgle, that bite, that feeling you have been trying to fight off but can't fully get rid.
4 21700s, 8.4 volts, coupled with the right RTA/RDA...it's a lovely addition to the collection. The finish on the purple is perfect, the button stiff but reassuring. It's a special piece that I'm glad to have.