... ,Achilles Tendonitis,Rotator Cuff,Strained Lower Back Laser Therapy Device(diode laser)-MDL500,500mW,made in China.1).Irradiation ... principleMDL-500 medical semiconductor laser instrument ,exports high power, longest wavelength, strongpenetrability. high laser energy also can import personal ... 0 to 500mw, which can be regulated continuously. laser output is stable. that hassmall volume, light weight ...