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Customer Ratings & Reviews

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Customer reviews

Rating 3.6 out of 5 stars with 67 reviews

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Customers are saying

Customers commend the Vio Smartphone Keychain Breathalyzer for its ease of use and compact size, describing it as "working great" and "quite accurate for a small Bluetooth device." However, concerns are raised regarding its accuracy, with some users expressing skepticism about its reliability compared to professional breathalyzers used by law enforcement. Additionally, the battery life of the device has been criticized for draining quicker than desired.

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.
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Page 1 Showing 1-5 of 5 reviews
  • Cons mentioned:
    Battery life

    Rated 5 out of 5 stars

    Safety on a chain.

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

    This little safety device on a key chain can prevent you from ending up in chains. It gives you a clear picture of your BAC. Keep a spare AAA battery with you it is power hungry.

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

    Rated 4 out of 5 stars

    Pretty Good

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

    the alcohol tester is great works every time i use it uses battery life pretty fast

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

    Rated 4 out of 5 stars

    good tool. sucks battery.

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

    If you follow the parameters, seems like a good tool. Of course, most people (including myself) won't have any method of checking accuracy. It does seem relatively accurate judging by my knowing myself & my limits. It seems to drain it's battery very fast, however, so I'd recommend pulling the battery when not in use. Also, it sometimes missed it's own prompts (maybe because of battery life?) In that it says "blow" but is still in its "warm-up" phase. Like I said, it's a good tool & with having a reference. Way cheaper than a dui or dwi.

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

    Rated 5 out of 5 stars

    Love it!

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

    Batteries run out quicker than I'd like, but because it does so much I understand why. No biggie.

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

    Rated 4 out of 5 stars

    Works with Samsung S5

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

    All you have to do is download app and turn on app, Bluetooth and BacTrack. It immediately connects, which i was surprise how quick it was(5 seconds?) Used it about 8 times, testing after 1 beer, 2 beers...and wife tested...to see if it looks accurate. I think its pretty close. For a big guy like me 3 beers in just over 1.5 hours i blew .05...I think i would be closer to .08 or so. but eye opening to see it doesn't take much to be legally drunk...Nice feature to 'guess' your BAC and it also keeps track of how many drinks you have when you blow. Cant comment on battery life, but 1 AAA will not be a problem replace.

    I would recommend this to a friend