The Heads have Two High Intensity LED Bulbs with Three postions, OFF, 1 ON, 2 ON, 3 ON or All Four Lights ON. Has two flexible adjustable supports. Uses AAA batteries. LED Bulbs use very little power to get a lot of light so it will last an amazingly long time when using batteries.
One Switch on Each Light Head allows light selection of 1 to 4 LED Bulbs.
One head aimed at the Key Board of a Laptop lights the entire keyboard.
The other head can either be turned OFF or Turn use one head to aim at the keyboard and one head to aim at the paper that your are reading from.
Power can either come from three AAA batteries or use the USB Port on the Laptop or Desktop Model Computer. or buy the same unit but includes the wall transformer. Select Down Below.
