Excellent product compared to other similar devices, my first choice in this category!
This is a Standard 510 Thread Vape Battery.
It has a very common Micro USB charger port.
Adjustable voltage up/down buttons and separate power button (5 clicks to turn on,5 clicks to turn off.
Voltage adjustable by .1 from 3.3v to 5.0v) so you can find your perfect heat setting.