UVBrite Go Self-Cleaning UV Water Bottle - 18.6 oz Insulated Stainless-Steel Rechargeable & Reusable Purifying Bottle - Sterilization & Travel-Friendly - BPA Free - Leakproof with Safety Lock COLOR (Cyan) Self-Cleaning Bottle: At the press of a button, you can quench your thirst with pure, safe water from a clean bottle. The Go Bottle also has an intelligent self-cleaning function, sterilizing the bottle each time you run a cycle. UV-C Cap: Boasting a UV-C based purification system, this Go Water Bottle reduces microbes up to 99.99%! UV-C disinfection breaksdown certain chemical bonds and scrambles the structure of DNA, RNA and proteins to effectively killall microorganisms. Safety Lock: UVBrite’s Go Self-Cleaning UV Water Bottle is equipped with a safety lock to prevent accidental exposure to UV-C light. Unlike other UV Water-Purifying Bottles on the market, this UV-C light cannot be activated once the cap is removed. Expert Construction: The water bottle is crafted of food-grade, 304 stainless steel to ensure long-term use, while the cap – made of BPA-free, food-grade materials – boasts a top-grade quartz lens with built-in LED and a leak-proof silicone gasket. Two Sterilizing Modes: To ensure that water from most sources is sterilized, simply press the button once to activate the normal sterilizing mode. If water requires greater sterilization, press the button twice to activate the blitz mode.