This LED Light Pen is a unique pen functioning as a writing implement but also as a torch that is capable of giving a good light and detail to any area that needs to be examined. The standard light bulbs convert energy generated by batteries in 10% luminosity and the remainder in heat. The LED technology makes good use of this energy guaranteeing a long duration of light. With its pure electronics and duration of 10.000 hours, LED Pen Light is a vital instrument for professionals. It comes complete with two lithium micro-batteries. Length: 130 mm.