Solar charging,no need to connect car cigarette lighter to charge,Color LCD digital display for clear display of tire informationOperating frequency:433.92MHz +/-0.1MHzWorking current:less than equal 30mAWorking voltage:5VWorking temperature:-40 Celsius-+85 CelsiusColour:Black Material:ABSSize:95*80*26mmPressure range:0-5.0BarWorking voltage:2.1V-3.6VWaterproof rating:IP67Transmit :Less than 10dBmTemperature resolution:about 2 Celsius(25 Celsius)Package Contents:1* host4* external sensor1* non-slip mat1* disassembly toolOnly the above package content, other products are not included.Note: Light 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.