BACtrack C8 Breathalyser, Professional-Grade Accuracy, Optional Wireless Smartphone Connectivity, Compatible w/Apple iPhone, Google & Samsung Android Devices, Apple HealthKit Integration

As a night club medical this pocket device is great to show people how drunk they are. Saves alot of arguments. Tested vigorously on a student night and was solid and reliable. Oozes quality, simple to use and estimated time to sober really handy.

Very useful and works well.

This is great. Simple. However, I would drink water before using as any alcohol in the mouth gives a false high reading.

Tried and tested, it was so complicated understanding what the measurements mean but finally. IN CLEAR ENGLISH.0.035 or UNDER you can legally drive in UK0.036 or over eg. 0.04 your over the legal limit.0.035 is approx 3.5 alcohol units and you get rid of approx 1 unit per hour but if your a heavy/regular drinker that's quicker

Really good. App is easy to use and seems pretty accurate. We’ve tested it with several people and kept track of what each of us have drank and it matches the amount of units very closely.Obviously I wouldn’t recommend using anything if the law depends on you being sober but this is very good for everything else.

Absolute waste of money! Says you have been drinking when completely sober, says you shouldn’t be able to walk! When you’ve had 10 drinks is says your completely sober! Amazon no help whatsoever ever! Told me noReturns on this item!

Of course you'll never know how accurate any of these things are without comparing to a genuine police spec breathalyser, and so I intend to follow the advice of not driving unless it shows 0.00. But this seems believable in terms of BAC increase per drink.Bought after my AlcoDigital 7000 went thoroughly unreliable, in spite of the sensor being nowhere near its use limits. It will happily tell me I'm 6 times the legal drink-drive limit after 2 beers. The Bactrack on the other hand registers me as approaching the (England) limit when compared side by side.Buying as a 'morning after' device (I wouldn't drink past the limit and drive the same day) the hours until sober feature is a real boon. I feel it allows me to make an educated decision on whether I can have one more drink tonight. It seems to be pretty linear. If you test 2 hours after it said 4 hours remaining, it'll say about 2.I went for the model that works fully (including hours until sober display) without the app. Worth the extra £20 in my opinion, as that's how I prefer to use the device.

Never second guess your legal limit again.Really handy to have even the morning after a late night to make sure you are not driving when you shouldn’t.