In 2013, Charles Michael Yim had what seemed like a solid idea. He wanted to help people make safer drinking decisions through a gadget called the Breathometer. The concept was pretty straightforward—a small device you could plug into your phone’s headphone jack. It worked with an app to test your blood alcohol content (BAC) right on the spot.
Yim called it as precise as police-grade breathalyzers. He talked about drunk driving deaths and how his product could save lives, make friends the responsible “designated driver,” and help people avoid risky choices. The pitch sounded like a win for anyone who ever second-guessed driving after a night out.
The Shark Tank Pitch: High Energy and a Surprising Outcome
When Yim appeared on Season 5 of Shark Tank, he was asking for $250,000 in exchange for 10% ownership. The Sharks raised their eyebrows at his claim that the device worked on all phones and was ready for prime time. Yim demoed the gadget right there. Everyone saw it light up and seem to work.
The conversation quickly got competitive. Yim fielded tough questions from Mark Cuban and Kevin O’Leary, but handled them with confidence. The Sharks seemed impressed by his hustle and the story behind the brand. They saw the potential for this product to be in every bar or car glove box.
Then came the negotiation. Instead of just one or two investors, every single Shark wanted in. Mark Cuban pushed hard for a bigger stake—he wanted half the deal for himself. After a round of fast talking, the final agreement was $1 million for 30% of the company, split among all five Sharks.
Mark Cuban put in $500,000 for half that equity. The rest was divided among Lori Greiner, Daymond John, Robert Herjavec, and Kevin O’Leary. Yim walked out with five backers, ten times the money he’d asked for, and a ton of momentum.
Immediate Growth: Public Buzz and Growing Sales
After the episode aired, Breathometer blew up. Within weeks, Yim said the company did $1 million in sales. People were excited by the idea of a portable, affordable breath tester they could use anywhere. The company signed deals with retailers like Brookstone and Best Buy. Coverage from the show helped open those doors.
The initial Breathometer product plugged into the headphone jack, but tech kept moving. By mid-2014, Yim and his team launched the “Breeze.” This was a wireless version that connected via Bluetooth, skipping the outdated headphone port. This helped Breathometer stay relevant as smartphones changed.
Sales apparently climbed to around $10 million that year. Breathometer’s app got downloads. Fans popped up online, and the buzz kept building. The company’s story was shared at tech conferences and in think pieces about Silicon Valley’s “better for you” tech push.
Big Retail Partnerships: Growth and Expectations
Landing shelf space at Brookstone or Best Buy isn’t easy, especially for a hardware startup. Retailers gave Breathometer a nod, expecting it would be a holiday hit and maybe a useful driver safety device.
Online sales mattered, too, but getting into brick-and-mortar stores still carried weight. It made the product seem mainstream, not just a quirky gadget from TV. Yim did interviews on morning shows to promote the brand, and for a while, Breathometer looked like a classic Shark Tank success.
Customers liked the convenience, and some even gifted it as a novelty for birthdays or bachelor parties. The message was everywhere: Breathometer could keep you out of trouble and probably pay for itself by stopping just one bad decision.
Problems Begin: Questions About Accuracy
But not everyone was sold. Some early customers said the readings seemed off. Was the Breathometer as reliable as a police breathalyzer, as Yim claimed? People tested themselves, then used other devices, and got different results.
The device was also limited by smartphone hardware. Each phone model could have minor variances in its headphone jack or audio processing. That created small but real differences in the Breathometer’s sensor output. The wireless “Breeze” model was designed to solve part of that problem, but new questions came up.
Soon, these weren’t just small complaints posted online. The issue of accuracy reached regulators. The Federal Trade Commission (FTC) started asking questions. For a product involved in health and public safety, even small inaccuracies could have huge consequences.
The FTC Steps In: Serious Consequences
In 2017, the FTC released its findings. They said Breathometer’s claims about reliability were misleading. The device often underestimated BAC levels, and sometimes completely failed to work. That could lead people to think they were safe to drive when they really weren’t.
For something designed to reduce harm, giving a false sense of security was a huge problem. The FTC forced Breathometer to offer refunds to all customers, even those who had bought devices years before. The ruling also barred the company from making similar health claims unless it could back them up with strong, scientific evidence.
At a basic level, Breathometer had to retract much of its core marketing. Customers reached out for refunds, and the company now had a damaged reputation to contend with. Old press clippings lost their shine; now stories about the FTC settlement dominated online search results.
Impact on the Business: Shutting Down Breathometer
After the FTC ruling, it was clear Breathometer couldn’t continue as it was. The goodwill the company had with customers and its brand partners was basically gone. When you’re selling a health and safety device people no longer trust, it’s hard to keep the lights on.
Breathometer stopped taking new orders and began working through refund requests. The website faded away. Social accounts went dark. In short order, the company was officially out of business.
Yim and his team tried to move into other products for a brief period, including a hydration tracker. But by then, the original breathalyzer story overshadowed everything.
What Happened to the Sharks’ Investments?
Early on, all five Sharks were listed as investors, and their names were tied to Breathometer’s success. But after the show, things changed. According to later interviews, only Mark Cuban actually kept his investment in the long run.
The other four Sharks—Kevin O’Leary, Lori Greiner, Robert Herjavec, and Daymond John—eventually withdrew their money. The details haven’t all been made public, but it’s clear they stepped back as problems mounted.
Cuban became the most closely associated with Breathometer, both as the biggest spender and as the main Shark who stuck around for the bumpy ride. He’s gone on record since, describing Breathometer as one of his least successful Shark Tank investments. It seems even a billionaire’s backing isn’t enough if the tech itself doesn’t measure up.
Bigger Lessons: Health Tech Isn’t Like Other Gadgets
The crash of Breathometer is now a standard case study about the risks of health and safety tech. The stakes are just higher. If you’re making a novelty or gaming gadget and it flops, most people just go back to their old devices. With something tied directly to public health and risky behaviors, expectations skyrocket.
For a breathalyzer, accuracy isn’t a “nice to have.” It’s everything. Tech founders sometimes downplay the boring side—regulatory approval, testing, and ongoing calibration. But if you skip those steps, even a cool product can end up being dangerous.
Breathometer’s rise and fall have become a warning. For anyone launching a health or safety gadget, the lesson is clear: making the sale isn’t enough. You have to deliver on accuracy, and be ready for extra scrutiny from both the market and regulators.
If you’re interested in following how other Shark Tank companies have managed tech, customer trust, and regulatory change, check out detailed breakdowns on Read My Business.
Breathometer’s Status Now: Just a Footnote
Today, Breathometer doesn’t exist as a product or a brand. The website was taken down, and the company hasn’t posted updates in years. Charles Michael Yim has moved on to other projects, and the original team scattered after the business closed.
You’ll still find old Breathometers for sale on auction sites sometimes, but there’s no support or customer service. For a while, people debated whether to keep their devices as odd collectibles. Mostly, though, the story has faded, except as an example shared among entrepreneurs and investors.
Closing Thoughts: Trust Is Everything
Looking back, Breathometer seemed to have everything going for it—celebrity investors, retail buzz, and a straightforward pitch that people understood. But none of that could make up for a lack of accuracy in a device that people wanted to trust with their safety.
If there’s a takeaway, it’s this: products connected to health or public decisions aren’t just about hype, design, or getting on TV. They have to work, and be proven to work, every single time. If you’re building in that space, double down on getting the basics right, or you might end up with a cautionary tale instead of a business.
