RUTIDA Breathalyzer & Alcohol Tester with 12 Mouthpieces, Portable Alcohol Breath Tester Professional Breathalysers with LCD Display Digital Fast, High Accuracy, black, 10*3*2cm

Easy to use and does work,Just be clear on the alcohol % for your country, the instructions could be a bit more basic, simple

This product is dangerous as not very accurate at all. I don't intend to drink drive, but would like a monitor for the day after, I have tested it few times after 1 hour of drinking wine, different readings every time. Waste of money

I've had this thing for two weeks and have had tested it thoroughly myself and with others.The biggest problem is that it gives you hugely different results from test to test. I've followed the instructions to the letter, and we've tested it in 10 minute intervals. The results change from anywhere around .5 to .2 each time without rhyme or reason.On top of that, it's not a quality product. After a week of use, the plastic screw on the device has stripped and the disposable mouthpieces won't attach.This thing is cheap for a reason - it isn't accurate, it's poorly made and not reliable.The ONLY thing it is good for is to detect if ANY alcohol is on your breath - but if you want anything more than that, look elsewhere. And as mentioned, the mouth pieces no longer fit into the device after only a week of use.

Absolutely outrageous and dangerous. This product does not work. I followed the instructions to the letter and it came back with either zero or very inconsistent results - always low. Avoid this product, it should be removed from the market.

Have tested it several times to be sure, and can safely say it does not work.

After drinking about 7 beers im blowing "0.03" which is not true, do not rely on this if driving....

Dri ked 0.7l wine and nothing, checked 2 days, much times

Reading is always zero even after a bottle of wine!