"We like to invite family and friends to our home, so we have thought that the best way to avoid risk and fines was to buy a breathalyzer. It has been very easy to use and it comes with instructions in Spanish, it does not have buttons because it works with the mobile itself, and the same app on the mobile tells you on the screen to wait or to blow, showing the result immediately. After having tried it several times, I have seen that it is reliable, since the measurements that I have seen correspond to what my guests had drunk. Although the limits change, the app takes into account the current regulations. Highly recommended!"

Detmar