... 4. two 18350 batt Latest item !! Smotkech 3 volt to 6 volt ,huge vapor, Brass body with oil sprout Varivolt ... .Output Voltage: adjustable from 3.0v~6.0v in 0.1 volt increments3.Discharge voltage: 6v~8.4v4. ... display will show your battery voltage during your vaping. 6. When " dR" is chosen,leave the button ... variable voltage new ecig vmax adjust 3 volt to 6 volt ,huge vapor, Brass body with oil sprout