Yosta Livepor 100W Mod looks like transformer which with ergonomic design provide comfortable hand feeling for you. Compatible with single 21700 / 20700 / 18650 battery to support 100W maximum output. Utilized advanced chipset, features 0.01s fast firing speed. Together with large 0.96 inch OLED screen, you can check data easily. Also, it comes with a LED indicator for displaying the remaining power. Zinc alloy construction 0.96-inch colorful display screen Compact size with ergonomic designed Temperature range at 100-315