Yocan STIX is a Leak Proof Juice Pen. Simple,elegant,discreet,super-efficient and leak proof,the STIX is designed for juice,it's easy to use,and will offer you great flavor and crystal smooth texture. Yocan Stix is small, portable, leak proof and easy to use! How to use it ? Screw the base connector off,screw the oil chamber off. Filling the oil chamber with your stuff. Attach the oil chamber to the coil by screwing it on. Then return the device to the correct position. Press the power button 5 times in 2 seconds to power on the device. Press the power button 3 times rapidly to adjust to your desired voltage.