A field of reach ultraviolet light disinfecting system includes a wrist band having two or more UV light emitters to produce a shower of UV light over the hand to disinfect pathogens that may be located on the hand and/or objects and surfaces in the light field of light dispersion the UV light emitters. A field of reach ultraviolet light disinfecting device has a top-hand UV light emitter configured on the wrist band to produce a top-hand UV light field that is emitted down over the top or back of a hand, when donned on a person's wrist. A field of reach ultraviolet light disinfecting device has a palm-hand UV light emitter that produces a palm-hand UV light field over the palm of a hand. A visible light emitter may project a visible light that overlaps the UV light field to indicate the location of the UV light emission.