Precise monitoring, automatic pressure measurement, error bar less than 0.05. Intelligent digital display, stop completely immediately, no need to watch, when the tire pressure reaches a predetermined value, it automatically stop inflation, eliminating the hidden danger of overloading. With LED lights. Wireless fast charging, bid farewell to the problem of dragging, not restricted by location/distance, easily reach the whole car with 4 wireless tires/air inflation, unlimited inflation. Tough and inflatable tube, wear- nylon braided inflatable tube, anti-freezing and non-breaking, explosion-proof and high temperature resistance. Small and portable, with the car on the road, responding at any time, compact body design, can be seen everywhere in the car, refused to put it on top at critical moments. Specification: Name: Electric air pump Voltage: 21V Current: 10A Power: 200W Pressure: 830psi Air volume: 12L/min Scope of application: tire pumping/ball inflation Applicable battery: Applicable 18V lithium battery (without battery) Inflatable tube length: 65cm Colour: as shown Material: Plastic Package Contents: 2 SET x Electric Air Pump 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.