Electro-luminescent technology makes the keys light up Ideal where there is insufficient light Great for laptop and desktop users alike Easy to operate Convenient to carry less than 500g 3 function hot keys - EL function power sleep USB interface Change the way your keyboard looks from functional into fantastic with sharp looks and innovative glowing keys. This slim-style keyboard uses electro-luminescent EL technology to convert the keys into a light source. It can be easily carried around in your laptop case and looks great.