The XO C138 is a parking phone number holder designed to help other drivers contact you quickly and safely if your vehicle is blocking their way. It features high-contrast white numbers on a black background, ensuring your contact details remain clearly visible from a distance. The device is constructed from a combination of ABS and silicone, making it resistant to general wear and the extreme temperatures often found on a car dashboard. Installation is straightforward using the included strong adhesive tape, and the universal design ensures it fits any vehicle. For those who value their privacy, the holder includes a red slider that allows you to hide your number whenever it is not needed. This silver-bodied accessory provides a reliable way to manage parking access while giving you full control over who sees your information.