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Customer Ratings & Reviews

Customer reviews

Rating 4.1 out of 5 stars with 506 reviews

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Rating by feature

  • Value

    Rating 4.1 out of 5 stars

  • Quality

    Rating 3.8 out of 5 stars

  • Ease of Use

    Rating 4.4 out of 5 stars

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Cons mentioned filter

85%would recommend to a friend

Customers are saying

Customers find value in the Go Keychain Breathalyzer's accuracy and ease of use, with many appreciating its convenient size. The overall performance is well-received, and the price is considered a good deal. However, some customers have reported issues with the battery life upon receiving the product.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 3 Showing 41-60 of 506 reviews
  • Pros mentioned:
    Overall performance

    Rated 5 out of 5 stars

    Review

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This breathalyzer has saved me so many times from driving impaired. Highly recommend!

    I would recommend this to a friend
  • Pros mentioned:
    Accuracy

    Rated 5 out of 5 stars

    Great gift

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This thing is great. Me and my buddy both have one. I will get a text saying .07 and the picnic is great. Or i say to him im at .05 better catch up. Would recommend to proper adults.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Price, Size

    Rated 5 out of 5 stars

    works great easy to use

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    convenient, small, easy to use. Great price. Works great.

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    Double-Check Accuracy

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The device works well when property "tuned" and used per recommendations. Out of the box, it took couple uses to calibrate the sensor. And then over the next couple days, I questioned the wide range of results the device calculated. About a week in, the device was testing pretty consistently. Check the battery, and be sure to use alkaline, not rechargeable.

    I would recommend this to a friend
  • Pros mentioned:
    Accuracy, Size

    Rated 5 out of 5 stars

    Easy to use, great size

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I got this for my brother who turned 21 and then got one for myself. The keychain was perfect size wise. It's small enough to always keep with you and it works great. It always safer than sorry after a night out, which is why we got it. Just to double check before we drive

    I would recommend this to a friend
  • Pros mentioned:
    Accuracy

    Rated 4 out of 5 stars

    Every home should have one.

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I don't know if it is 100% accurate, but can't say that the police breathalyzer's are either. That being said it registers 0% properly and seems accurate. Why not five stars? Sometimes it seems fussy about the blow, even when I haven't had a drink. When I had people I knew to be drunk they couldn't do it at all. At least that indicates that they were definitely to drunk to drive.

    I would recommend this to a friend
  • Pros mentioned:
    Accuracy, Ease of use

    Rated 4 out of 5 stars

    BAC Tester

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It is very easy to use and seems to be very accurate in its readings.

    I would recommend this to a friend
  • Pros mentioned:
    Accuracy, Ease of use

    Rated 4 out of 5 stars

    Super Easy to Use

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    THere is a definite learning curve to using this product. Once learned it is easy to use and fairly accurate.

    I would recommend this to a friend
  • Pros mentioned:
    Accuracy, Ease of use

    Rated 5 out of 5 stars

    Great breathalyzer

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Very accurate and easy to use. It does require batteries but those are provided.

    I would recommend this to a friend
  • Pros mentioned:
    Accuracy, Size

    Rated 5 out of 5 stars

    Great product

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is a great product to help keep yourself safe. It is small and very convenient. It's great when your friends think they are okay to drive and then they register over the limit on this tool. Usually they end up staying over and we all just pass out.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Overall performance

    Rated 4 out of 5 stars

    Great too own

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It works great if you want to check your self before getting behind the wheel

    I would recommend this to a friend
  • Cons mentioned:
    Battery life

    Rated 4 out of 5 stars

    Directionally accurate, but just for fun

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Purchased and used for fun on New Years Eve with a group of about 15 people. Readings were all over the chart all night long. We were pretty good about following the directions to get accurate results. After a couple uses it said the battery was dead, but I took it out and put it back in and didn't seem to have an issue after that.

    I would recommend this to a friend
  • Pros mentioned:
    Accuracy, Price

    Rated 5 out of 5 stars

    Gift

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Bought for kids to keep on their keychains. They are adults actually. Lol. They loved it! Great price and they work great.

    I would recommend this to a friend
  • Pros mentioned:
    Accuracy, Ease of use

    Rated 4 out of 5 stars

    Simple and easy

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I like this product because it is so easy to Use. Portable and accurate.

    I would recommend this to a friend
  • Cons mentioned:
    Battery life

    Rated 1 out of 5 stars

    stops working within 6 months

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    Posted . Owned for 8 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is the 2nd BACtrack keychain breathalyzer I've purchased over the years, both have started out fine, but very quickly they stop working properly. the first one a purple model will now only register if you use mouthwash and blow into it within a few minutes. the rest of the time, even after drinking for hours won't register a thing. my newest bactrack go model is also not registering anything. I was drinking for a number of hours and know I was still well above a .04 by number of drinks and hours, it registered a 0.00 every time I blew into it for over 2 hours (tested about every 30 minutes) This was after I had quit drinking 2 hours prior to testing. while I know these devices are not meant to be super accurate, I did expect them to be an extra safety precaution. that's a little tough when they don't operate at all. I've tried replacing the batteries, blowing into them regularly so the sensors won't dry out. the other thing is, the cost to send them in for recalibrating them seems to be equal to just buying a new device, I'm not buying a new one every 6 months when they quit working that quickly. I was going to buy a higher end model, however my trust in them working has been lost with this second keychain model going bad so quickly .

    No, I would not recommend this to a friend
  • Pros mentioned:
    Accuracy, Price

    Rated 5 out of 5 stars

    Really works

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    After reading reviews on here I made the decision to get this one. Best decision I could have made. It is inexpensive and really works. It is accurate when used properly and is a fun way to tell your friends that they need to take an Uber.

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Size

    Rated 4 out of 5 stars

    Small compact design

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Easy to use and understand. Compact so you can put in pocket or a purse.

    I would recommend this to a friend
  • Pros mentioned:
    Accuracy, Ease of use

    Rated 5 out of 5 stars

    Great Breathalyzer

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The BACtrack Breathalyzer was easy to use with the directions provided. No issues with the results as long as you wait 5 minutes between checking blood alcohol level as per the directions. Very consistent.

    I would recommend this to a friend
  • Pros mentioned:
    Accuracy, Ease of use

    Rated 5 out of 5 stars

    Accurate, great to make sure you’re safe

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    Posted . Owned for 1.5 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Accurate, easy to use, always handy, just because you don’t feel drunk doesn’t mean you’re not and this give you know reason to drive over the limit

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Size

    Rated 4 out of 5 stars

    Good product to carry on ones person

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Good product, gear size, easy to carry and better to be safe than sorry.

    I would recommend this to a friend
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