... relief,diminish inflammation,for back pain,tissue injury.. Low Level Laser Therapy System(500mw),1). Irradiation treatment principle MDL-500 ... debaucjed, nasosinusitis, auricle inflammation, tympanitis. 3). Technical parameter Specifications Laser source: GaAlAs Output power: 500mW Wavelength: 808nM Timed: 0 ... input: AC220Vor110V Warranty: 2 years 2012 Smart Low Level Laser Therapy System(500mw)