Wireless Connection: No need for complicated wiring, the doorbell connects wirelessly to your home network. Night Vision: With high-quality night , the doorbell can capture clear footage even in low light conditions. Two-Way Intercom: The doorbell comes with a built-in intercom system that allows you to communicate with visitors before opening the door. Voice Change: The doorbell has a voice change feature that allows you to customize the doorbell's greeting message. Video Call: Easy to deal with visiting guests, when someone press the doorbell, the doorbell will push the nitifications to the phone, the owner can enter the phone video conversation interface. Support 2.4GHz WIFI and APP connection, 480P high resolution, present you clearly pictures and video. Two Way Audio: Built in mic, you can see and talk to your visitor at any time and anywhere when pressed the Doorbell. Long Standby: Built in high capacity battery, long standby, don't need charge it frequently. The battery is rechargeable battery, when the battery is no power, can charge it again and again. Portable Installation: Can be pasted and perforated. Support adhesive backing, don't need punch holes, while support hole punch installation. No plugging, convenient and hassle-free. Capture picture: Storage to the cloud, security protection drip. When a visitor press the doorbell, it can capture the visitor's picture and save the record to the cloud, so the phone app can view the past pictures at any time, which is and more secure. Night Vision: Build in the IR LED light, the picture is clear in the day and at night. Also can automatically switch to night mode from day mode after the ambientlight down to 2 Lux. Colour:White Material:ABS Package Contents: 1 * Electronic doorbell 1 * glue 1 * Ding machine 1 * Screw package 1 * English user manual 1 * USB cable 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.