Product Description: Automatic Shut-off Upon Inflation Completion Preset the inflation range value to avoid over-inflation or under-inflation, safe and reliable. 33% Faster Inflation with 17-Cylinder Motor The pure copper motor provides much higher speed and greater airflow, fully inflating an R175 tire in 8 minutes. Long-lasting Battery Features two sets of 18650 high-discharge lithium batteries for extended usage time. Accurate Display of Tire Pressure A high-precision barometric sensor monitors tire pressure in real-time to avoid danger. Convenient Wireless Design No longer need a socket or cable, for a much wider range of use. Easy to Carry Slim size, easy to carry without taking up much space. Useful Emergency Light The built-in emergency light can be used as a flashlight in the dark. Comes with Air Nozzles 3 professional air nozzles are included, no need to purchase separately. Usage Information 1. Connect the hose to the pump and select the appropriate air nozzle. 2. Press and hold "OK" to turn it on.