BACtrackKeychain Breathalyser (Black) | Ultra-Portable Pocket Keyring Alcohol Tester for Personal Use

Good value, nice and compact, no need for any diposable blow tubes

This a product for the USA, so not good for the UK. I couldn't fins a convertion chart for the UK so it stays in the draw

Worked once and registered a 0.02 reading. but from that point on returned 0.0 over the next two days of a stags party.

I regularly keep one of these in my vehicle , just been camping and stopped drinking at 10:30pm ... was still on 0.2% at 10am the next day !.. OK may not be absolutely accurate but its an indication and keeps you aware !

Fabulous little breathalyser for your bag, I bought this as I travel a lot and always want to make sure that I am ok to drive the next day. Its small enough for your handbag it has a keychain so you could hang it on your bag but I tend to leave mine in my handbag.Easy to use, very straight forward.I would recommend this product and a very reasonable price.I would rather have this and know that I am safe to drive.

Seems fine, wanted something for a newly passed driver to be able to monitor the "day after". My only problem as a parent is how accurate it is? And the instructions clearer as the the drink limits compared to the reading shown

I am relatively happy with this product although I can only really use it as an all or nothing. In other words it will register if there is alcohol in your system but the readout is a bit haphazard. Probably works best for the next morning before you get behind the wheel!

When we purchased this we were very unsure of whether it would work or not but after testing it over the passed month or so it is very accurate.