Description <br> Features: Ensures road safety with these 4 Tire Pressure Monitoring Caps featuring real time detection via high precisions sensors, instantly alerting driver of pressure deviations through color coded indicators (green/yellow/red). <br> Crafted from plastic metal composite, these leak detection caps offer easy installation with a simple twist on design for various weather conditions. <br> Ideal for safety conscious driver, and fleet managers seeking tire pressure check tools for vehicles. <br> Provides continuous monitoring during highway drives, commutes, or prolonged vehicle storage to prevent underinflation related accidents and tire wear. <br> Combines low power consumption technology, delivering year round protections while minimizing battery replacements and maintenance efforts. <br> <br> Specifications: Component: Plastic + Metal <br> Size: about. 0.99x2.29cm/0.39x0.9in <br> <br> Package Includes: 4pcs Tire Pressure Monitoring Cap <br> <br> note: Please allow 1-2cm errors due to manual measurement. <br> Due to difference between different monitors, the picture may not reflect the item actual color. <br>