Topical Treatment: A mini version of heat therapy device with a treatment area of 7 cm ±10%, designed for small, targeted areas while helping protect surrounding healthy skin. Safe and Durable: Utilizes precise 3111nm UVB wavelength and high-quality LED lamp for reliable performance and extended service life. Fast and Effective: Features a high-intensity UV light source for visible results and includes an electronic timer to ensure accurate and safe treatment duration. Compact and Portable: Miniature design makes it more portable than previous models, easily fits in a pocket for convenient travel use. Easy Operation: Read the user manual carefully before use, perform proper testing, and always wear UV-protective safety glasses during treatment. Ultraviolet light therapy dates back to the 1920s. With advancements in technology, artificial light sources have evolved significantly. UVA and UVB therapies are now widely recognized as effective treatment options. Specifications: Power: 2W Type-C Input: DC 5V 2A Battery Capacity: 450mAh LED Parameters: UVA: 320–400nm (peak 368.3nm) UVB: 280–320nm (peak 311.1nm) Working Distance: 3cm ±0.5cm Irradiated Area: 7 cm ±10% Product Size: 13.5 x 3 x 1.5 cm Product Weight: 31.3g 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 any makeup before application. Expose only the targeted skin area and cover surrounding healthy skin with a protective barrier such as a white cloth. If needed, apply a recommended ointment to the treatment area before use.