“I love my BACtrack. I bought my first one almost five years ago. I'll admit I was getting frustrated because the last couple of times that I sent my device in for calibration I was told that it could not be calibrated and given a discount for my next model. Obviously I bought the replacements each time because I don't want to go without, but this time I sent my bactrack in before the end of the suggested annual window and it passed with flying colors! Ultimately saved me a bunch of money and now I'm sold on sending in my BACtrack when it's due. Hopefully it passes again next time!”