This is a true pass through ego style E-cig. It relies solely on USB power, there is no built in battery. There is a 2A wall adater included.
After to connecting the VV pass through to an adequate power source (2 amp) click the button three times and the color of the LED will change along with the voltage output. Here is the color/voltage chart:
Green LED: 4.8V
Red LED: 4.3V
Purple LED :3.8V
Blue LED :
- -1pc. VV EGO passthrough unit with retractable 26 inch USB cord attached.
- -1pc. 2 amp USB wall adaptor with 4 inch lead wire.
This item is sold with no warranty expressed!