LaseLocks Nail Fungus Laser Treatment DeviceTreatment principle: LaseLocks mushroom nail laser treatment device is equipped with 2 x 660 nm cold red laser, 2 x 470 nm cold blue laser and 1 x 905 nm cold infrared laser, modern medical research shows that infrared laser can kill fungus, and infrared laser can penetrate deep into nails and skin and kill fungus in the deep layers of nails and skin, easy treatment without recurrence. . Easy to use: just turn on the switch and insert fingers or toes