1、With one-key hiding function, you can hide the number by dialing the back switch to protect your privacy. 2、Cold-proof, high and low temperature resistance, no degumming, no deformation. 3、Fluorescent, day writing, automatic lighting at night, so that the number can be clearly seen at night. 4、6 groups of numbers, users can freely combine the digital formats they want. 5、With mobile phone support function, easy to install and use. Features: 1. With one-key hiding function, you can hide the number by dialing the back switch to protect your privacy. 2. Cold-proof, high and low temperature resistance, no degumming, no deformation. 3. Fluorescent, day writing, automatic lighting at night, so that the number can be clearly seen at night. 4. 6 groups of numbers, users can freely combine the digital formats they want. 5. With mobile phone support function, easy to install and use. Specification: Condition: 100% Brand New Material: ABS Optional Color: Gold, Red, Black, Blue Weight: Approx. 145g Package List: 1 x Parking Stop Sign