Spy tire sensors in a special, distinctive edition where common manufacturing defects in the market have been corrected: (1) Disconnection of the device from the sensor and the appearance of the ER symbol for no reason (2) Battery size increased to more than double (800 mAh) 3) Improved solar energy efficiency. (Modifications are from the factory, not local) There are also fast-fill needles and an expansion for the sensor valves for quick deflation. Screens and sensors are sold separately. Tire Pressure Monitoring System (Suitable for those who deflate tires in the desert, you can set the alarm not to ring at low pressure like (10), while other editions have a limited deflation, around 20 or 17, then the alarm bothers you. This device is from the best company specialized in this field. Most other Chinese products may resemble it in appearance, but they fail within months, while this device has a lifespan of years. The valves can be replaced individually if damaged, or the screen can be replaced individually if lost. Among its advantages, it reads tire pressure and temperature. You have the option to activate alerts if a certain temperature is reached, or if the air pressure drops or exceeds the limit you desire. The valve is metallic and strong, and you can transfer it from one car to another if you sell the car or change the rims. Installation is easy at any tire shop without removing tires or re-balancing. Just unseat the tire from one side, replace the existing valve with this one, then inflate the tire with air, and the sensor works immediately without electrical wiring or hassle. It operates on solar energy, so you don't need to charge it frequently. Shipping is available to all regions of the Kingdom and the Gulf countries.