describe: Align the pressure gauge hole with the tire and press firmly the tire pressure gauge will automatically display a reading; when it is not squeezed hard it will deflate. Simple button control to open the unit four units switch intelligently Digital display backlight design direct repeat measurement no need to shut down and restart automatically shut down after 30 seconds of standby or long press to shut down. Used to measure products such as cars bicycles balls rubber boats etc. It has a wide range of applications to provide you with a safe and healthy ride. scale: Measuring range: 0~100PSI; 0~6.85BAR; 0~690 kPa; 0~7kg/CMF Product size: 5.6cm*3.1cm*13.8cm Material composition: engineering ABS Product color: silver/black/red The package includes: Digital tire pressure gauge*1