Very Accurate
This product is great. A friend of mine has a DUI and cant have his BAC over .025 otherwise his car wont start. The $1000 or more machine installed in his car is super accurate. We had a of couple beers and waited a bit and blew into the device, he was confident in the readings so he decided to hop in the car. The $1000+ device in the car read a .013, he then quickly blew into THIS device 10 seconds later and it read .014, its super accurate at 1/10 the cost.
Rating: 5 stars