The Eleaf iStick 30W is upgraded based on the popular Eleaf iStick 20W through expanding the range of output voltage, wattage, and the ability to fire sub-ohm atomizers. Capable of firing 30 watts and firing down to 0.4ohm, the iStick 30W looks and performs very similar to the previous version, but better. Under the support of 2200mAh battery capacity, it will give you a great performance between 2V-8V or 5W-30W. Newly introduced spring connector, wear-resistant stainless steel threads, and streamlined design on top make iStick 30W more suitable for atomizers. Also, the added button lock functionality protects the buttons and prolong the device's life. iStick 30W is the one you deserve to own.