The Yocan Hive 2.0 is a grand update to the original. With a no-leakage design and made to work with e-juice’s and concentrates. An all-in-one device that is as discreet as it is good looking.The Hive 2.0 uses three voltage settings. To move from one voltage level to another, quickly press the power button 3 times. There are three indicators lights to let you know the selected voltage. One blue light represents the low voltage. Two blue lights represent medium voltage, and all three blue lights represent high voltage.