... the Mini lava tube 1adjusted voltage ego(lava tube)18350 battery,Mini lava tube Items ego-03SIZESingle e cigarette length Single ... device 4. The activation button (the big one), held down for 10 seconds or longer, the vv ecig will shut itself off ... -cigarette cut off automatically when inhale lasts too long. 18350 battery for Mini variable voltage ego ,VV MOD ,PVS MOD