“I never imagined using such a thing but since I bought this product I am so glad I have it. What a great way to give one comfort about whether you can drive home or not. It's a winner!!”
“I sent the unit in for a tune up & ordered extra mouthpieces. Received several requests for a review of the mouthpiece purchase. Not much to say about them. The unit tune up & return though was quick. I appreciated that. I assume that the accuracy of the unit is very close to perfect.”
