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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

Pros mentioned filter

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 6 Showing 101-120 of 506 reviews
  • Pros mentioned:
    Accuracy

    Rated 4 out of 5 stars

    Good in a pinch

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

    I bought this breathalyzer to keep myself out of trouble in case I have a beer at dinner some night. So far it has worked well. And everyone has to try it if I am at a party type situation.

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

    Rated 5 out of 5 stars

    Accurate device

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

    This is a very accurate product and at a good price. Small and easy to carry in car, purse, pocket, or other carry bag.

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

    Rated 5 out of 5 stars

    Portable breathalyzer

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

    If you drink alcohol and MUST drive, do not even consider unless you breath into this device to reasonably assess your blood alcohol level. I only consider using IF I’ve only had 1-2 drinks, over a couple of hours with food and doubt inebriated. Anything more take UBER! It simply provides you guidance these low ingestion situations.

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

    Rated 4 out of 5 stars

    Rolling eyes posted here...

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

    My wife purchased this just to be on the "safe side", have to say though, it is a good idea. Cannot vouch for accuracy, thank goodness, but it will at least get you in the ballpark.

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

    Rated 4 out of 5 stars

    Good buy

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

    This is a pretty cool gadget. Not much to it. Its a great and inexpensive way to get a rough idea of what your BAC is. This is not 100% accurate, but for the price, it does the job.

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

    Rated 4 out of 5 stars

    Works Great!!

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

    Great small device to test BA level. When directions are followed product works great! Very pleased. Only downside is it only uses one AAA battery which it depleted quickly with used a lot.

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

    Rated 5 out of 5 stars

    review

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    Posted . Owned for 11 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    very reliable and easy to use....portable, good for at the bar

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

    Rated 4 out of 5 stars

    Good but inconsistent, ok battery life

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

    It works but you may have to give it a few tries for consistency. The battery is bad on the device. Overall it's cheap enough and will get the job done to a point of sufficiency.

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

    Rated 3 out of 5 stars

    Rough Estimate but Handy Nonetheless

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

    I've bought this to check the amount of alcohol I'm drinking when I'm with friends or hanging out and testing this product, I've noticed there are major discrepancies in its results, even when I'm not drinking as much. Nonetheless, this product is very handy to have a rough estimate on how much you've been drinking and know your limitation. The device is very small and compact, which makes it great when you're on the run, and what a way to please the crowd and have fun with it (Please do not make it out of a game) 3/5

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

    Rated 4 out of 5 stars

    Good

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

    Does what it says. If you don't blow continuously through the beep it will read 0 so you have to make sure that you blow

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

    Rated 4 out of 5 stars

    Good for short term

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

    Worked well for what we needed it for, but really hard to tell when batteries are needed

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

    Rated 5 out of 5 stars

    Good product

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

    Results are accurate. Product is easy to use. Extra mouth pieces is good.

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

    Rated 5 out of 5 stars

    Bactrack

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

    Small easy accurate will save you from dui or other issues

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

    Rated 4 out of 5 stars

    Useful and convenient

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

    Does what it should do. Is small so it is convenient to bring with you. Also it is convenient because it uses batteries, so if it dies you can buy batteries at a store.

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

    Rated 5 out of 5 stars

    Best gift for someone who’s turning 21

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    Best Buy Employee
    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I got this for myself and my girlfriend we love it. It works great. Gives you a good idea on where you are with your alcohol level.  I would definitely buy again.

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

    Rated 5 out of 5 stars

    Works great

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

    Accurate results. It is easy to carry around as it fits on a keychain

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

    Rated 5 out of 5 stars

    Bought this for a fun gift

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

    I recently purchased 4 of these! Stocking stuffers for my adult children and husband. I figured there may be times it could come in handy! We gave it a try, those who were drinking and those who weren't. It gave different readings and we felt as if it were fairly accurate. (Based on those who drank and how much vs. those who hadn't.)

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

    Rated 5 out of 5 stars

    easy and dependable

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

    This is a great product, it's easy to use and reliable for keeping things legal!!

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

    Rated 5 out of 5 stars

    Awesome product!

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

    Very accurate and easy to use! Great tool to check your BAC level.

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

    Rated 4 out of 5 stars

    Breathalyzer

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

    Great product. Helps me keep track of how much I drink in an accurate way to keep everyone safe.

    I would recommend this to a friend
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