The ultra-portable BACtrack Vio transforms your smartphone into a breathalyser. Quickly and easily estimate your blood alcohol content (BAC), track your results over time, and with ZeroLine®, estimate when your BAC will return to 0.00%. You can even call an Uber™ directly from the BACtrack App if you’ve had too much to drink. Features wireless Bluetooth connectivity, innovative tracking, personalisation, and Apple Health integration tools. Compatible with most iPhone and Android devices. Perfect for BAC testing on the go, the Vio fits inside a purse or pocket and can be used as a keychain.


  • Advanced MicroCheck® Sensor – Proprietary Advanced MicroCheck® Sensor technology delivers reliable, accurate BAC results you can trust.
  • Ultra-Compact Design – Fits inside a purse or pocket and can be easily used as a keychain.
  • Bluetooth Connectivity – Wirelessly connects to your iPhone or Android device via Bluetooth
  • ZeroLine® Technology – Estimates when your BAC will return to 0.00%, empowering you to make smarter decisions while drinking
  • BACtrack Companion App – The free BACtrack app saves and tracks BAC results over time and can even help you call an Uber™ if you’ve had too much.
  • Compatibility – Compatible with most iOS and Android devices. See full list below.
  • Warranty – All BACtrack breathalyzers are backed by a full one-year warranty.
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BACtrack Vio

With its ultra-compact keychain design and it’s innovative flip-up mouthpiece, the BACtrack Vio is our smallest smartphone breathalyser yet. Powered by our MicroCheck Sensor Technology, the Vio delivers reliable, accurate BAC results, anywhere you go.


[rs_feature_box box_style=”style2″ icon=”fa fa-bolt” title=”Proprietary Sensors” icon_size=”80px” icon_color=”#ffffff” text_color=”#ffffff”]Provides the most accurate results because of our sensors: police-grade Xtend® fuel-cell and reliable MicroCheck sensor technology.[/rs_feature_box]
[rs_feature_box box_style=”style2″ icon=”fa fa-check-circle” title=”Mouthpieces” icon_size=”80px” icon_color=”#ffffff” text_color=”#ffffff”]Includes washable, disposable mouthpieces to improve accuracy by collecting the highest quality sample, and to allow you to test others safely.[/rs_feature_box]
[rs_feature_box box_style=”style2″ icon=”fa fa-share-alt” title=”Privacy & Sharing” icon_size=”80px” icon_color=”#ffffff” text_color=”#ffffff”]Choose what happens to your results. Delete? Track privately? Send as anonymous, randomised data? Share only with a loved one? Post to social media? You choose.[/rs_feature_box]


  • Apple Watch
  • iPhone 4S, 5, 5C, 5S, 6, 6s, 6 Plus, 6s Plus & SE
  • iPad 3, 4, iPad Air 1 & 2, iPad Pro and Mini 1, 2, 3 & 4
  • iPod 5th generation and higher
  • Samsung Galaxy S3, S4, S5, S6, S7 & S7 Edge
  • Sony Xperia Z2 & Z3
  • HTC One M8, M9, E8 and A9
  • Google Nexus 5 & 6
  • LG G3, G4 & G5
  • Most other smart devices running Android 4.3+ and equipped with Bluetooth Smart
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BACtrack Vio Breathalyser

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Mouthpieces x 3

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AAA Battery

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Instruction Manual

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One Year Limited Warranty


Dimensions 2.4 x 7.24 x 1.65 cm
Weight 57 g
Mouthpieces Fold-out; 3 included
Battery 1 AAA battery, included
Sensor Technology Advanced MicroCheck®
Warm-up Time About 10 seconds
Blowing Time 5 seconds
BAC Range 0.000-0.400% BAC
Warranty 1 Year
Patent No. US D710,223 S


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