3 In 1 Digital Tyre Gauge 1) Pressure rang: 0-100 PSI2) Accuracy: ± 1%3) Muti-scales: PSI, Bar, Kgf/cm2, Kpa.4) Single key operation: manual ON/OFF, unit conversion, auto power off.5) Bright LED flash light6) Back lighted LCD for use in the dark7) With compass8) Long-life 3V lithium coin cellUsage:Packing: Digital Tyre Gauge