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.
395-400nm UV LED blacklight. Portable UV LED Flashlight. 1 × UV LED Flashlight. Waterproof and shock-resistant design. Compact and lightweight.