The iStick is powered by a DNA20 style regulation chip, and can be used in either variable voltage or variable wattage mode. The OLED screen displays the resistance of the attached atomizer, battery remaining, and your current power setting. While in operation, the screen displays your puff time in seconds. The device has a lock setting to prevent accidental firing. Features a native 510 connection, and includes an optional eGo adapter to allow for maximum compatibility. Eleaf iStick Details: 2200mAh internal Li-Ion Battery Variable Wattage (VW) up to 20W and Variable Voltage (VV) from 3v – 5.5v Bright OLED display 510 threaded connection (510 to eGo adapter included) Power on/off: Press the button five times to turn the iStick on or off. VW/VV Mode: press button 3 times while unit is on to cycle vv/vw mode. 10-sec Protection: Maximum of 10 seconds per drag. Atomizer Short-Circuit Protection: If atomizer short-circuits, the OLED screen show “Atomizer Sho...