... mini uv torch 2,395nm uv flashlight 3,Wave length: 395nm, 405nm 4,portable uv led light 12pcs mini uv torch:UV LED ... The high quality materials used in the package are specifically chosen to maximize radiometric power output, have superior UV resistance ... Readmission and patron control, outside applications, security applications, invisible inks, dye tracing, arts and crafts, exhibits, displays, ...