Streamline design with alloy shell. Two LCD display with blue backlight. Tire gauge can accurately test tire pressure and hold last time testing data. Test unit transferable from PSI to Kgf/cm2,it can be used wourlwide. Electronic compass is not only preciseness but also provide friendly user interface. Electronic temperature meter can provide accurate temperature. LED torch can provide illumination in darkness. Last time Tire pressure data hold function. Dimension: 146mm?50mm?30mm Weight:160g Power supply: 2pcsXAAA Battery Measurement range: tire pressure:5-100PSI/0.3-7KGF/cm2) temperature:-20°C~50°C Appendix: Pressure Unit Transfer Sheet