... 60HZTemperature -5 to 40Coverage 540 cm2 Therapy principle:Blue LightDestroy the survived condition of bacterium and kill them by cells of ... skin, no side effects;· Easy to use, no need of professional personnel;· Comfortable, painless, non-invasive and no downtime;· Stable and ... our products, you should be after trained to use the product for the treatment. We have user manual, DVD and online service ...