... RoHS FCC lava tube variable voltagel avatube mini from 3v-6v,lavatube body Specification: ModelVariable Voltage lava ... tube"+" buttonon press you can increase the voltage from 3.0v-6.0v, when you reach 6 ... 0v"-" buttonon press you can decrease the voltage from 6.0v-3.0v, when you reach 3v ... , gas station, airport, mall, bars and nightclubs, restaurant and hotel, office building and anywhere where does not ...