Desktop HEPA Air Purifier UVC Air Cleaner Filter 10000mAh Negative Ion Air Purifier Silent Portable Deodorization for Bedroom Office Living Room. Breathe easier with cleaner and odor-free air. UV-C Germicidal Lamp: Equipped with a built-in UV-C germicidal lamp emitting ultraviolet light at a wavelength of 275nm, our desktop air purifier operates within the most effective range for sterilization.