... 1.chrome lava tube 2.900mah/1600/2200mah 3.match CE4,CE5,DCT Vivi Tank 4.Quality Assured Lava tube 3.0-6 ... .0v variable voltage e cigarette Description:4 buttons on the lava tube:1. "+" button ... , on press you can increase the voltage from 3v-6v, when you reach 6.0 ... , EMS, DHL, TNT, FedExWarranty: 6 months after shipment . Lava tube 3.0-6.0v variable voltage e cigarette