... (L) mm x 14 (D)*Unit Weight :540g* Adjustable voltagefrom 3v to 6v*Resistance:1.3-2.9Ω*Mouthfuls for each ... :1. "+" button, on press you can increase the voltage from 3v-6v, when you reach 6 v it starts back at ... , on press you can decrease the voltage from 6v-3v, when you reach 3v it starts back at 6v3. On/Off button ...