To operate the Reo Grand, simply slide open the front panel and insert one of the provided 6 ml bottles, filled with your favorite e-liquid. After attaching an 18650 battery through the copper beryllium gold plated contacts, put a 510 or 306 threaded atomizer on top, turn the top button counter clockwise, and press down on the same button to begin vaping. As the trigger can be sensitive, if you’re storing the Reo Grand in your pocket or purse, turn the button clockwise and power down the unit.