Topical Treatment: A mini version of heat therapy with a treatment area of 7 cm 10%, designed to target small, scattered areas and help protect healthy skin. Safe and Durable: Utilizes precise 3111 nm UV wavelength and high-quality LED lamp for high stability and long service life. Fast and Effective: Features a high-intensity UV light source for visible results, with an electronic timer to control treatment duration and enhance safety. Compact and Portable: Miniature design makes it more portable than previous models, easy to carry in a pocket for use at home or while traveling. Easy Operation: Read the manual carefully before use, perform proper testing, and always wear safety glasses during treatment. Ultraviolet light therapy originated in the 1920s. With advancements in science and technology, artificial light sources have evolved rapidly. UVA and UVB therapies are now widely recognized as effective treatment options. Specifications: Power: 2W Type-C Input: DC 5V 2A Battery Capacity: 450 mAh LED Parameters: UVA: 320400 nm (peak 368.3 nm) UVB: 280320 nm (peak 3111 nm) Working Distance: 3 cm 0.5 cm Irradiated Area: 7 cm 10% Product Size: 13.5 3 1.5 cm Product Weight: 31.3 g Material: ABS Usage: Handheld Caution: This UVB lamp emits ultraviolet radiation. Do not look directly at the light source. Always wear UV-protective glasses during use. Clean the treatment area and remove makeup before application. Expose only the area to be treated and cover surrounding healthy skin with a white cloth or other protective method. If needed, apply a protective ointment to the treated skin area.