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Know Who's Actually The Most Drunk. In Seconds.
No more guessing. See who's really winning tonight. Just blow and find out.
£54.99
£39.99
⚡ Powered by Fuel Cell Sensor Technology
Buy Now
Built for nights like this.
✓
Settles It
No more wondering about who's really the drunkest.
✓
Pregame Essential
Pass it around before you're even out the door.
✓
Fits in Your Pocket
Small enough to fit in your pocket.
✓
Actually Accurate
So you actually trust the number.
Here's How It Works
1
Wait 20 minutes after your last drink or bite to eat, then blow.
2
Power on — one button, no app needed.
3
Get your number in seconds.
4
Pass it around and let the arguments begin.
What People Are Saying
👨
★★★★★
"This K1 model breathalyzer is easy to use. Just blow to get accurate results in seconds. Compact with long battery life. Good value, highly recommended!"
— Verified Buyer
📰
"The best performing breathalyzer devices use a fuel cell sensor — the same as police-grade models."
— BBC
🎉
Bring it to the pregame. Everyone will love seeing their score.
BlowBAC
FAQ
Is this actually accurate?
Real fuel-cell sensor technology, the same category referenced by CBS News and the BBC for breath-alcohol detection.
How long does it take to get a reading?
A few seconds after you blow.
Does it need charging?
Yes, USB-C rechargeable. A full charge is good for 200+ tests.
Does it come with more than one mouthpiece?
Yes — every BlowBAC K1 comes with 5 mouthpieces, so hygiene's never an issue when it's getting passed around.
Do you ship outside the UK and US?
We currently ship to most countries — if you don't see your country at checkout, drop us an email and we'll sort it out.
How fast will I get it?
UK: typically 7-18 business days. US: typically 7-15 business days. We'll email you tracking as soon as it ships.