Most people don't realize how bad they are at estimating their own BAC.

A 160lb person who drinks 3 beers in 2 hours is likely around 0.06% — legally fine in most states, but already experiencing reduced coordination and slower reaction time. Add one more drink and you're at 0.08%. That's a DUI.

The problem isn't willpower. It's that alcohol literally impairs the part of your brain that judges impairment.

We built Halo because we were tired of the guessing game. It's a ring that reads your BAC in real-time through your skin — no breathalyzer, no awkwardness, no pulling out a device at the bar.

Set a personal threshold. Get a subtle vibration when you're approaching it. Share your status with a trusted friend who can check on you.

It's not about drinking less. It's about knowing where you actually stand.

HALO Ring — $199, one-time purchase. No subscriptions, no upsells.