The XCM II-Hot Rock Wii Case is a new innovation in case modding technology. With a built in Digital LED thermometer, the XCM II-Hot Rock Wii Case is able to alert the user by changing the LED color when the Wii console reaches certain temperatures. Color changes takes place in 5 degree increments. For example, if your Wii console's temperature reaches over 55 degree Celsius, the LED will display 'RED' and start flashing.