Using the car air conditioners leak detector tool in conjunction with glasses equipped with yellow filter optical lenses can filter out foreign light from the environment, providing clearer and purer visibility of UV dyes undergoing fluorescence reactions. Simultaneously, it protects your eyes from UV exposure Equipped with 100 LED beads, it can accurately pinpoints leaks, even in garage or indoor space The ergonomic handle design allows you to operate comfortably and freely for extended periods of time Features a textured, nonslip grip handle. The compact size, is advantageous for carrying with the vehicle Designed specifically for detecting automotive air conditioners leak