Alcohol Breathalyzer Portable Breath Tester AT-10 Accurate Digital Display Convenient Lightweight Pocket Design A Must if You Drive the Next Day after a Night out Drinking. Be Safe Not Sorry.

I bought this to stick in my car to ne a safer driver but this thing is either too sensative or just plain dosnt work. If you blow too hard it will read 0.00 if you dont blow hard enough it reads 0.00 Even blowing soft and consistent it would read a level of lets say 0.02 once then 0.00 the next two tries. Not helpfull I guess as a novility party item not real world aplacation.

I got consistent readings after I found out to blow with your breath from my stomach and the tip of the breathalyzer has to touch the front of your teeth I got two readings after two beers in the first 30 minutes which was 0.07 and 3 minutes later was 0.05 still buzzed over limit of 0.02. Two beers wouldn't drive first two hours.David

It doesn't read bac correctly or sometimes at all. Literally the only thing it's supposed to do.

Get a better one.. I sent back due to straight oit the box didnt work

Doesn't give you an accurate reading

Thank you; It's a lot of fun.