new and high quality; USB and Solar power charging; High and low pressure, leak alarm; LCD display screen, Simple user interface; Real-time monitoring tire pressure and temperature; Battery life:24 months Waterproof grade:IPX7 The tire position of any swap function(no need to remove the sensor in the tire) Easy to install, convenient to replace Dust-Proof / Water-Proof / Anti-theft Operating Voltage: 3.7V Operating temperature: -20-70 Pressure range: 0-5Bar Transmitting frequency: 433.92MHZ Transmitting power 10dBm Charging voltage: DC5.1V Colour:black Material:ABS Package Contents: 4 * Car External Tire Pressure Sensors 1 * Display 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.