Precise monitoring, automatic pressure measurement, error Less than 0.05 Bar Intelligent digital display, full stop immediately, no need to watch, when the tire pressure reaches a predetermined value automatically stop inflating, overcharging hidden trouble With LED Light Wireless speed charging, say goodbye to the drag line troubles, not limited by location/distance, easy to achieve the whole car 4 tire inflation/air free wireless, inflation is not limited Tough and inflatable tube, wear- nylon braided inflatable tube is anti-freezing and non-breaking, explosion-proof and high-temperature Compact and portable, always with the car, ready to respond, compact body design, everywhere in the car, refuse to place, the critical moment immediately on the top Colour:blue Material:plastic Note:: The options do not include batteries. please prepare the batteries by yourself. Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Due to different product batches, the appearance , which does not affect the use Package Contents: 1 x Electric air pump (Tool only, battery not included) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.