We have a professional QC team to conduct comprehensive inspection of each penlight. We would try our best to solve any problem if you are not satisfied with our product. ●Palm-Friendly Penlight — The lightweight strong body plus anti-slip texture provide good grip in your palm.
Wavelength：395nm. 1 Penlight (not include battery). Detecting Head and Body Lice Eggs (Nits and Eggs reflect ultraviolet light). Emitting Color：UV light. Drop resistance:1.5m. Detecting bodily fluids, which fluoresce when exposed to UV light.