The Hannya Mini mod still maintains the 2 sets of replacement decorated doors just like the full-sized Hannya. The device is powered by a single 18650 battery with an 80-watt max power output. It is equipped with a 0.96 inch OLED screen which displays all of the important information you need! Depending on the tank you are using you have the options to run in VW, TC, or Bypass modes. The device has a plethora of safety protections such as over-puff protection, reverse polarity protection, high-temperature protection, short circuit protection, and low voltage protection.