Lilyhood Wired Xbox 360 Controller097 The ii Case HOT ROCK CASE is a new innovation in case modding technology. With a built in Digital LED thermometer, the HOT ROCK 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 consoles temperature reaches over 55 degree Celsius, the LED will display RED and flashing. This will alert the user to turn off the console and check for problems.