Discreet dual-cart 650mah battery Full screen digital display showing voltage and battery life Auto Draw and button activated 510 Thread Fits 1g and 2g cartridges Adjustable voltage (2.6v, 3.0v, 3.6v, 4.0v) with LED light indicator Preheat mode USB-C charger included 4 months warranty Cartridges not included Instructions: Click the button 5 times quickly to turn on/off. Click the button once to switch between the left, right, or both cartridges. Click the button 3 times quickly to adjust the voltage. Click the button twice quickly to activate the preheat mode.
