Features:Solar power charging, do not need to charge by connecting car cigarettes lighters. At the same time, USB can be charged in cloudy and rainy days, making it convenient and practical. Colorful digital displaying, clear to show tire information.Wireless connect by external sensors, easy install. Built-in vibration sensor, the car automatically turnon when starting, and automatically turnoff when the car stops High volume alarm sound warning, multiple tire pressure units available, long reception distance, stable signal. Specifications:Material:ABSWorking temperature: -20-80Monitoring ranges:0-6.0barSize:Approx.95mm/3.74''x80mm/3.15''x27mm/1.06'' Note:Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1Set Car TPMS