VOOPOO DRAG with Gene chip, with resonable price , more and more popular Size: 90*54*24mm Weight: 178g DRAG with Gene chip Specifications Working Voltage: 6.4-8.5v Working Current: 1-40A Output Voltage Range:0-40A Resistance under Wattage Mode:0.05-3.0Ω Resistance under TC Mode:0.05-1.5Ω Output Power:5-157w Charging Voltage:5V Charging Current:1800mA Quiescent Current:≤10uA Temperature Range:200℉-600℉,100℃-315℃ Working Efficiency:95% Firmware Upgradable:Yes