The listing, Ego-C Twist has ended.
I have an Ego-C Twist.. it is kinda beat up but that's only because some of the paint is coming off.. the EGo-C Twist has a dial located at the base of the battery. This dial allows you to set the voltage output of the battery from 3.2V~4.8V in increments of 0.2V. Simply turn the dial to your desired vaping voltage. The visible numbers have been rubbed off from use but it still works like a champ!