The digital 4.3" color display is easy to read even in the dark because of the displays' backlight feature. Data and results can easily be saved or backed up for additional analysis or data storage by saving the results using BlueTooth to your Smartphone. Additionally, the instrument has on-board data logging, which means the data will be not only be stored to your Smartphone, but it will so also be stored onto the P51-870. The real advantage of the P51-870 digital manifold is a library of 126 preloaded refrigerants including new blends not even on the current Refprop database, as well as its ability to measure in both US and International measurement standards.