This is a great product that utilizes web based applications that can integrate well with other features on your tablet or smart phone, but its reliance on a 3rd party device for readings affects its utility & effectiveness if being used often in a night. For example it takes longer to go through the process for a reading than a stand alone product that simply resets itself after every use since it has to reboot the app as well. This product is slightly more tedious to use than the stand alone police grade units. If it was able to work as a stand alone product & be used in conjunction with an app. It would be a much better product.
Quick/prompt great service. Calibration was done on time and shipped back within a week. San Fran to Maine. Multi product user and have always been treated great.
Bought this last year to know what my BAC and the BAC of my friends is. No one leaves until under .04/05 on the way down. I like knowing exactly what my BAC is and confirm my consumption is well under control.
I sent in my S70, S78, S80 for recalibration and the S70 records about 2 x alcohol level than the other two. It appears I can't trust the accuracy of any of the units due to the discrepancy.