Effortless Installation & Wide Application: Its robust adhesive allows you to mount on various items such as electronic devices, TV remotes, cars, and tools as well as fabrics and flat surfaces. Important: Please make sure the is clean and flat for optimal adherence. Not suitable for bike seats. Unique Design & Enhanced Protection: The case serves to protect your product from scratches and damages, prolonging the life of your device. It can also be easily stuck on bicycles or pet collars, facilitating convenient tracking. Multipurpose & Economical: Available in of 4, these adhesive mounts for tracker are economical and you have some to spare. They offer a simple and efficient solution to making your valuables at all times, preventing instances of misplacement. Colour:Black & White Material:Silica gel Package Contents: 2 * black electronic product protective case 2 * white electronic product protective case Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.