Eleaf iStick 30W is upgraded, based on iSitck through expanding the range of output voltage and wattage. Under the support of 2200mAh battery capacity, it will give you great performance between 2V-8V or 5W-30W. Newly introduced spring connector, wear-resistant stainless steel thread, and streamlined design on top make iStick 30W more suitable for atomizers. More ever, the added button lock functionality protects the buttons and prolong their service life. iStick 30W is the one you deserve to own.