Minchen New 501B 5 Mode 395-410 Uv 3w Ultraviolet LED Flashlight Torch+1pc Protected 18650 2000mAh 3.7v. Rechargeable Battery and Universal Single Slot charger Aluminum alloy casing,Aluminum Smooth/SMO Reflector. NEW 5 Mode 395-410nm UV-Ultraviolet Led Waterproof & Scratch resistance glass lens,One tail cap switch control 5 modes (High&gt;Middle&gt;Low&gt;Strobe and SOS) and ON/OFF. Only needs 1 x 18650 3.7V Battery (1pc Battery and Universal charger Included). Great for Pet Urine Detector, Sanitation - Cleanliness - UV Counterfeit Money Detector etc