just a 5mm white led. current with new alkaline aaa's is 37 mA. comes with a clipper. seems slightly similiar to the 1LED clipper light. oh, i put 2 baterias in the battery case (3 volts) and used a dummy aaa , alumium foil. it still lights up a little bright, bright enough that i can see around my room when i shine it at the ceiling........i wonder if there's any electronics in here. not a bad buy for just $9.97