Low power - Approximately 100 milliamps at 12 volts drives the Littlite LED to full output. Efficient - most of the power used by the Littlite LED is delivered to the LEDs . . . not a resistor. Long life - Over-driving seriously reduces the life of white LEDs. The LEDs in the Littlite LED are not overdriven and may be expected to remain useful for over 5000 hours of operation.12 or 18 inch gooseneck. Three way rocker switch allows user to toggle between white light and red light output. Complete with 12-volt transformer.