The 3B Laser PEN 500 is a high performance 500mw (808nm, infrared) laser. Treatment times are shortened, particularly in frequency mode. You can set the treatment time or the dose, and the 3B LASER PEN 500 mW will calculate the rest automatically. Making your everyday work easier. In addition to the pre-set frequencies (Nogier, Bahr, Reininger, Chakra), you can program frequencies yourself quickly from 0.1 to 10,000 Hz, and then store these settings in one of 20 storage locations. It features a display for left and right-handers, integrated point finder, continuous wave, and freely programmable frequencies. Included with the 3B Laser PEN 500 is an aluminum case, two pairs of laser goggles, two rechargeable battery packs (totaling 4 batteries), and an additional charger.