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4in1 Red Laser Pen Light Pointer Ferule Led Torch compound microscope diagram com/s/files/1/2407/1409/products/laboratory-jack-amit-tader-laboratorydeal-technology-electronic-device_2904in1 Red Laser Pen Light Pointer Ferule Led Torch Description 100% Brand new Red Laser pointer Design with clip, can hold it in pockets or clip on notebooks Best suitable kit for professors, teachers, doctors, student presentation etc This multi function pen have a four functions: Ferule , ball pen, laser pointer & led light torch You can find a two button in the top of this multi function pen for LED light torch and red laser pointer Output Mode: