Two wavelengths treatment: The paronychia laser treatment device has 18 lamp beads. Each lamp bead can emit 470 nanometres of blue light and 905 nanometer infrared laser. These two laser wavelengths clean the nails together and penetrate deep into the nail plate to treat fungal roots under the nail plate.Digital timer display: During use, the device displays the remaining treatment time on the digital LED screen. So you can track the treatment time more comfortably and accurately. After use, the lamp beads automatically turn off to avoid manual time control.Treating multiple finger/toenails: What should I do if I have multiple paronychia? Paronychia laser devices can treat multiple toenails at the same time. Others need 20 minutes, but you only need 5 to 7 minutes. Save almost three