The built-in-tank features leak proof technology. It is top-filled, airflow controlled with a 1.9ml e-liquid capacity. To use the Origo CVT, first unscrew the top cap from the tank. Screw on a new coil to the top cap. Fill the tank with e-liquid by filling up to, but not exceeding the max line on the side of the battery.
Once full, insert the top cap into the tank and let it sit for a few minutes to let the e-liquid soak into the cotton. Press the fire button five times quickly to turn it on or off. Adjust your airflow ring and you're ready to vape.