Correct tyre pressures provide greater safety, longer tyre life and better fuel consumption. This nifty digital tyre pressure gauge provides tyre pressure reading in PSI and BAR with blue black-lit CD display. Functions of the AA Digital Tyre Pressure Gauge include: Blue back-lit LCD display Ergonomic design Automatic shut-off PSI & BAR settings Pressure range: 0-100PSI, 0-6.85BAR