Color: White Anti-Theft Design - Anti-theft doorbell mount compatible with Blink doorbell (1st Gen), Not Compatible with All-new Blink Doorbell (2nd Gen). SENLEG encases your Blink video doorbell securely. (tip: Doorbell sold separately). Applicable Doors - Inward-opening doors only | Door thickness 0.6" -2.3" | Door frame gap >0.06" | Not compatible with iron security doors, storm doors, or screen doors. No Tools or Installation Required - Attaches securely in seconds and easily installs and uninstalls. Simply place the Blink video doorbell inside and slide it over your front door, then adjust the fixed clip according to your door thickness. High Quality Material - Blink doorbell holder is made of high quality plastic housing and metal. It is tight and secure so your blink doorbell won't fall down the door. All the holes of Blink doorbell cover are well designed and won't block doorbell motion sensors and two-way audio. What You Will Get? - 1 x Blink video doorbell mount, installation instructions and various installation accessories.