BreathKey Keychain Breathalyzer - World's Smallest Breath Alcohol Tester

by BreathKey

Product Features

• World's smallest and lightest breath alcohol tester - weighs less than an ounce
• The only consumer breath tester to use fuel cell sensor technology, the same type that is used in police equipment
• Accuracy certified by the FDA to be +/- 0.010% at 0.080% BAC (blood alcohol content)
• Lifetime battery that lasts for many years with daily use
• Professional features and quality, and made in the USA

Product Description

BreathKey is the smallest and lightest breathalyzer in the world, but it is big on features and quality. Unlike other bulky breathalyzers, it easily fits on a keychain so you can take it with you wherever you go. And it is the only consumer breathalyzer at any size or price that has a fuel cell alcohol sensor, the same type that is used in police equipment. The BreathKey breath alcohol tester is FDA certified, and has a lifetime battery that is good for many years of daily use. It also has an advanced backlit display with simple plain English prompts. One button operation gives results in seconds.

Product Details

• Product Dimensions: 2.4 x 1.4 x 0.6 inches ; 0.6 ounces
• Shipping Weight: 1.3 ounces (View shipping rates and policies)
• ASIN: B000EB5MJY
• UPC: 094922699817
• Item model number: g10
• Average Customer Review: 3.9 out of 5 stars  See all reviews (60 customer reviews)
• Amazon Best Sellers Rank: #15,220 in Health & Personal Care (See Top 100 in Health & Personal Care)
  • #10 in Health & Personal Care > Medical Supplies & Equipment > Health Monitors > Alcohol Monitors

Customer Reviews

Most Helpful Customer Reviews

58 of 59 people found the following review helpful:

4.0 out of 5 stars A very good product but with 3 minor caveats, May 10, 2008

By 

Picky picky picky (Petaluma, CA USA) - See all my reviews

Amazon Verified Purchase

This review is from: BreathKey Keychain Breathalyzer - World's Smallest Breath Alcohol Tester (Health and Beauty)

The "Breathkey" is a very compact, light and convenient device. It seems accurate and gives me a reading in line with how I feel. It reads out in thousandths of a percent - there's a world of difference between 0.081% and 0.079% in terms of a DUI. I like it more the longer I own it. I have just purchased a second BreathKey to keep in my car, whilst the other one lives in my briefcase. I live in the Sonoma Wine Country and go on a lot of tastings. I now find I spit much more wine than I'll swallow.

(As an aside, I have a "friend" who suggests it's small enough to keep in my "pocket protector" with all of my pens.)

Caveats-

1) I've noticed that the first result often differs from subsequent results, so I always test twice and believe the highest reading.

2) You must wait 20 minutes after you finish a drink to use it. The residual alcohol in your mouth will otherwise give a false high reading (as would, I assume, a police unit).

2) If you get the error message, "blow hard" or, "blow long" it's for the next test, not the one you're doing.

3) It seems to take a rather long time (30 to 45 seconds) to reset between tests, this is only an issue if you have multiple people testing.

Summary-

I think my reservations and hence 4, instead of 5, stars may be true of all such devices, not just the Breathkey. If that's correct, this should be a 5 star review.

The unit is accurately calibrated right out of the box and remains accurate for 6 to 12 months, at which time you return it with $12, or so, for recalibration.

Perhaps the best thing about an accurate breathalyzer is developing a sense for your BAC from how you feel. It's interesting to me that I begin to feel a "buzz" at 0.04%; half of the legal limit. I turn my keys over to a non drinker whenever I feel any "buzz" at all. It's also interesting to see how sloooowly the alcohol wears off.

Another point about alcohol and driving is that even though you may be below the "legal" limit, if you have an accident and found to have any alcohol in your system, you now have a significantly higher exposure to prosecution, and diminished latitude in mounting a defense. Facts are facts, no?

59 of 62 people found the following review helpful:

5.0 out of 5 stars Good Breathalyzer, February 15, 2007

By 

D. MCGUE (Mililani, Hawaii) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: BreathKey Keychain Breathalyzer - World's Smallest Breath Alcohol Tester (Health and Beauty)

I think this breathalyzer is excellent! The results are right where I expected them to be depending on how much I had to drink. Much better than a DUI!

I have two suggestions for getting an accurate reading:
1. Do not take a deep breath before blowing into the breathalyzer. All that extra air will dilute the alcohol vapor that goes into the analyzer.
2. When blowing into the breathalyzer, try your best to capture the end of your breath. That will give you a much more accurate reading. Think about it . . . it makes sense . . . you would want to measure the alcohol deep in your lungs to get the best results. I've tried it using the first part of my breath one day and got a reading of .056, a minute later, using the "deep lung" air, the reading was .078. Trust me . . . the cops will take the "deep lung" air for the test if you're pulled over.

48 of 51 people found the following review helpful:

5.0 out of 5 stars Sobering Results!, April 11, 2008

By 

Martin A Hogan "Marty From SF" (San Francisco, CA. (Hercules)) - See all my reviews
(VINE VOICE)    (TOP 500 REVIEWER)    (2008 HOLIDAY TEAM)    (HALL OF FAME REVIEWER)    (REAL NAME)   

Amazon Verified Purchase

This review is from: BreathKey Keychain Breathalyzer - World's Smallest Breath Alcohol Tester (Health and Beauty)

I purchased this Breathalyzer over others, as its accuracy is FDA certified. The fuel sensor is the same used by police and the battery is long lasting. When I tried it, I was stupefied by the results. After turning on the button, it simply asks you to WAIT, then it will beep and ask you to BLOW into the small hole for four seconds (four beeps) until a solid beep occurs. After a minute or so, your test results will appear. I intentionally measured two shots of vodka with a tall soda mix and drank it over a 30-minute time slot. Then I waited 20 minutes. My blood alcohol level was 0.11 and I felt absolutely sober! 0.08 is the legal limit in most states. Your blood alcohol will not change if you eat or drink water or coffee. Only time will eliminate alcohol from your system. It took nearly 70 minutes before I was under 0.08. That was very scary. I checked my blood alcohol several times and the results were very steady. I would advise getting this device and showing your friends their results.