What Our Gearhead(R) Experts Are Saying:"This cap does way more than I expected. The UV-C cycle gives me peace of mind when filling up on the go, and the app connection helps me actually keep up with my water goals. Plus, it's sleek and super easy to use-win-win."Clean water, clean bottle-automatically. The LARQ Bottle PureVis(TM) 2 Cap turns any compatible LARQ bottle into a self-cleaning, smart hydration system. Powered by non-toxic UV-C LED technology, it eliminates bio-contaminants and odors by activating every two hours or on-demand with a single push. Whether we're on a trail, in a terminal, or at the office, this cap gives us confidence in every sip. The new PureVis(TM) 2 Cap also syncs with the LARQ app for real-time hydration tracking, so we can set daily goals and stay accountable throughout the day. A built-in USB-C rechargeable battery and detachable soft-touch handle round out this sleek, high-tech upgrade.