World’s First Wearable Breathalyzer

The GreyBand is the first wearable breathalyzer on the market. It has a sleek design, an intuitive LED feedback system, and a top-of-the-line blood alcohol analyzer - All totally interwoven into a smartphone app that does it all.

Our Journey

  • January 2021

    Cade files a provisional patent on the GreyBand

  • Founders Jack and Cade working

    August 2021

    GreySun Technologies, Inc. is incorporated

  • January 2022

    GreySun files a full patent application on the GreyBand

  • April 2022

    GreySun partners with Coding IoT, Ltd. to develop GreyBand prototype

  • November 2022

    GreyBand prototype manufactured and delivered

  • April 2023

    GreySun wins Marquette University’s “Brewed Ideas Challenge” grant competition

  • May 2023

    Cade graduates from Duke, and begins pursuing GreySun full-time

  • June 2023

    GreySun Technologies' team expands

  • September 2023

    GreySun partners with LaunchBoom for GreyBand marketing efforts

  • October 2023

    GreySun awarded NC IDEA Micro Grant

  • November 2023

    GreySun closes $50k Friends & Family Round

  • August 2024

    GreyBand sells over 100 pre-orders on Indiegogo

  • October 2024

    Bring hardware development from China to North Carolina, USA

GreyBand Breathalyzer

We advocate for an evidence-based approach to proactive health solutions. Scientific literature identifies three ways to enhance current breathalyzer technology, which form the foundation of GreyBand’s design.

Reach Your Perfect Level

Green Light

A green light: you know!

Continue drinking responsibly

Yellow Light

A yellow light: slow down!

You are approaching your limit

Red Light

A red light: seek help!

There’s a button to call a ride

And if anyone gets overly intoxicated, designated contacts are automatically notified.

Everything You Need to Get Started

When you order a GreyBand, each of these things come with your purchase.

GreyBand

USB-C Power Adapter

USB-C Cable

Lifetime Subscription

Mobile Companion

GreyBand’s

Sundown is our GreyBand integrated safety platform, with a plethora of features designed to evolve your relationship with alcohol from personally designated safety notifications, designated driver lists, in-app education, and more!

Meet The Founder

Co-Founder, CEO

  • Cade is a Duke University Alumni (‘23) who majored in Philosophy, minor in Chemistry. He currently works full-time at GreySun Technologies.

    At GreySun, Cade is the visionary behind the product & brand: setting and executing on short and long-term strategies, as well as securing fundraising and determining brand identity.