The following patients should not be treated with ultraviolet radiation: ● Patients with solar dermatitis ● Patients with Bloom syndrome ● Patients with malignant tumors in patients with lupus erythematosus ● Patients with dermatomyositis ● Pregnan women and others ● Patients with pigmented dry skin ● Patients who are not suitable for ultraviolet radiation treatment, etc. Specification: Product parameters: Name: Handheld UV Phototherapy Apparatus. Safety classification: Class 1. Working distance: 3CM. Rated power: 20VA. Output waveform type: UVB. Effective irradiation area: 48cm²±2%. Working voltage: AC220+22V OR AC110V+22V, frequency 50±1HZ. Lamp parameters: Name: UVB phototherapy lamp. Lamp size: H type 28X165mm. Average life: 1000 to 1200 hours. Irradiation intensity: 3~16mw/cm². Spectral range: 280~320nm. Feature: ● UVB phototherapy lamp. ● The lamp comb configuration made of high-grade materials is designed to fully take into account the convenience of customers in head irradiation treatment. ● Large irradiation area. ● The irradiated area of up to 48cm2 not only reflects the goodness of the product, but also allows the irradiation to stay in any corner and even eradicate stubborn diseases. ● Small and light, easy to operate. ● Lightweight, compact and convenient, unlike large hospital equipment, which is complicated and troublesome to use. ● Applicable to independent control family. ● The design of multiple safety measures is in line with the design standards of home use. Package included: 1x Handheld UV Phototherapy Apparatus