【LARGE TREATMENT AREA】: The portable 311nm phototherapy device has a treatment area of 48 cm² and can be used on body, face and head. 【PROFESSIONAL LIGHT】: Adopts a professional light source with treatment effect is fast and obvious.. Ensure high irradiation intensity with the internal reflector and shorten the treatment time. 【LIGHTWEIGHT】: It is small, lightweight and easy to use. It can be worn by the patient and treated at home. 【READY TO USE】:No need to travel or queue in line for treatment. You can continue working or studying normally. 【EASY OPERATION】Simplify the operation steps and ensure clear and user-friendly operation logic.