factory price 2013 ego usb passthrough electronic cigarette, variable voltage ego passthrough Variab

factory price 2013 ego usb passthrough electronic cigarette, variable voltage ego passthrough Variable voltage e cigego usb passthrough Variable voltage e cig DescriptionSpecificationDiameter:14mmLength:147mmStarter Kit2pcs battery2pcS atomizer1pc wall charger1pc Line stretcher1pc manualparameterCartridge Capacity500 puffsFull battery capacity1000 puffsBattery650 mAh,900mAh,1100mAhBattery lifetime300 times rechargingcharge time2hoursFeatures:1. New and advanced eGo twist battery. We modified the circuit to enable the adjustment of output voltage from 3.5V-3.7V-3.9V-4.1V. With a smart Buck-Boost converter inside,you can spin the knob at the bottom to adjust the output voltage depend on your need.2. Accurate adjustment of output voltage.3. There are 8 grids on the knob at the battery bottom,and each represents 0.2V. Spin the knob in a clockwise direction to increase output voltage and spin the knob in an anti-clockwise direction to decrease output voltage. Higher output voltage gives more smog. You can adjust the output voltage so easily and enjoy the wholesmog time.4. Accurate adjustment of output voltage, intensified short circuit protection, discharge and overcharge protection, switch protection, low voltage protection.5. The Battery also has the previous lock / unlock function.