This is a compact durable box mod with a stylish racing stripe right down the middle and a nice led screen. It packs a huge amount of power at 60 w capacity down to .2 ohms and also includes temperature control abilities to 600 degrees Fahrenheit. The huge power is already built right into the device so no external batteries needed. It will charge through the micro usb port on the device. It also comes with the ego one mega tank and sub ohm coil with a replacement coil. A must have for any collection.