Input voltage: 6.2 - 8.4VOutput voltage: 0.5V - 7VOutput wattage: 5W - 200WTemperature range: 100 - 350 Centigrade / 212 -662 FahrenheitAtomizer resistance: 0.05 - 2.5ohmHeating coil material: Common coil and pure nickel coilQuiescent current: Less than 200uAMaximum current: 35AUse 2 x 18650 batteries (not included)Low voltage protection: when the battery current is lower than 6.0V, love voltage protection. It shows "Checking battery"High voltage protection: when the battery current is higher than 9.0V, high voltage protection. It shows"high voltage"High temperature protection:when the temperature of PCBA is too high, temperature protection. It shows"Temperature is too high"Short circuit protection: when the atomizer is short circuit, it shows"short circuit"Smoking time: when the smoking time is over 10 seconds, it turns off automatically, and stops working.When it is on, the system enters into sleeping mode directly, the OLED is off. The system can be wakened when you press any button, OLED shows battery capacity, atomizer resistance, output voltage, the temperature of nickel coil when working, and the setting output wattage. When the system which is newly wakened is locked, press any button at this time, the OLED shows”LOCKED CLICK 5X”, press main button five times within 3S to unlock. If you don’t press any button, OLED is off after 30S, you can press any button to waken the system.It works when the battery voltage is over 6.0V, or OLED shows”LOW BATTERY”, reminds the battery voltage is too low.The atomizer resistance has to be between 0.04ohm and 2.5ohm. Press the main button, without connecting the atomizer, OLED shows”CHECK ATOMIZER”,reminds to detect atomizer; when it shorted, OLED shows”ATOMIZER SHORT”, reminds the atomizer is short circuit; when lower than 0.04ohm, OLED shows”LOW ATOMIZER”, reminds the atomizer resistance is too low; higher than 2.5ohm, OLED shows”HIGH ATOMIZER”, reminds atomizer resistance is too high.When it is not nickel coil, it works according to the setting output wattage, OLED shows battery capacity, atomizer resistance, output voltage, output wattage, without showing temperature, only shows temperature symbol. When it is nickel coil, the output is centered by setting temperature, the wattage is adjusted up and down automatically to keep the setting temperature.When it is unlocked, press the "+" button and "-"button, it adjusts the wattage at first, wattage range is 5.0W~200W. Press the "+" button and "-" button at the same time, it can switch adjusting wattage mode to adjusting temperature mode, after switching, the temperature symbol flicks 10 times, it shows entering into temperature adjustment mode, press the "+" button and "-" button, and adjusts to the expected nickel coil temperature; it can switch to wattage adjustment mode with the same operation.When smoking time is over 10S, it turns off automatically, OLED shows”SMOKING OVERTIME”, reminds smoking time is over; the atomizer is removed when smoking, it turns off automatically, OLED shows”ATOMIZER REMOVE”, reminds atomizer is removed; when the atomizer is short circuit when smoking, it turns off automatically, OLED shows”ATOMIZER SHORT”, reminds the atomizer is short circuit; when the temperature is over 72℃, it turns off automatically, OLED shows”HIGH TEMP”, reminds the temperature is too high; the working voltage is lower than 6.0V, it turns off automatically, OLED shows”CHECK BATTERY”, reminds the battery capacity is insufficient.Press main button for 5 times, it is locked and enters into sleeping mode.