Self-cleaning every 2 hours with UV-C LED technology. Eliminates up to 99.99% of bacteria. Double-walled vacuum insulation: keeps drinks cold for 24 hours and hot for 12 hours. The Li-Polymer battery keeps your bottle operational for up to 1 month on a single charge. Two water purification modes. Ready for adventure? Clean your water on the go - anytime, anywhere. This state-of-the-art bottle is capable of self-cleaning. Using eco-friendly UV-C technology, the bottle can purify up to 99.99% of bacteria and viruses. Ultraviolet light in the C spectrum (UV-C) is high-energy light with a wavelength of 200-400 nanometers. It works by killing, inactivating microorganisms, and destroying their DNA, preventing them from reproducing. The UV-C light neutralizes all harmful bacteria, making the water drinkable. Fill the bottle with water. Screw on the lid and press it to start purifying your water. The bottle has two modes, Normal and Adventure. Press the button once for Normal mode or twice for Adventure mode. Normal mode is indicated by a breathing sky-blue light, while Adventure mode is recognized by a pulsating blue light. You should gently shake the bottle during the purification cycle to ensure the UV light distributes evenly in the water. The bottle also self-cleans every 2 hours, performing a 10-second cycle to intelligently clean every crevice of your bottle. You can disable this feature when you need to store your water bottle by holding the button for 5 seconds. This activates the Travel Lock, preventing your bottle from self-cleaning until it is turned back on.