LARQ Bottle PureVis 500ml - Insulated UV Self-CleaningThe LARQ Bottle PureVis 500ml is the world's first self cleaning water bottle featuring proprietary PureVis UV C LED technology built directly into the cap. This insulated stainless steel bottle uses UV C light to neutralize up to 99% of bacteria and viruses in both your water and the bottle itself, activating automatically every two hours or at the touch of a button. The bottle uses patented UV C LED technology optimized at 270 275 nanometer