... type: semiconductor laserCapacity: 50mW, 100mW 4. Included KPT laser pen, a metal container, focusing card, and user manual ... pen.2. Point the laser pen to the focusing card, press the power button, and there will be ... the laser pen vertically to the marked area about 2-3 centimeters away, press the power button and ... hold it for 30-120 seconds, or till you feel the warmth from the laser beam ...