[Intelligent and Portable] The doorbell can be controlled by APP, automatic work model, intelligent and portable. Portable in size and weight, convenient to install and remove. [Two-Way Audio] Doorbell camera has built-in microphone and speaker. The doorbell camera has a built-in microphone and speaker system, which provides two-way high-fidelity conversation all the time. When someone presses the doorbell, APP will receive a notice. After clicking Open, it can have a video call with the visitors outside. No matter or outside, you will not miss any visitors. [Night Vision] The night image is clearly displayed. Built-in high-power infrared night vision lamp, combined with ICR infrared wave chip, can automatically switch day/night mode. Wire-free design saves you from cable hassle, you can just mount it any spot you like. Take only a few minutes, then you can easily set the door camera up and mount it up at door. Use double-sided tape(attached to the back plate bracket) to directly stick to the wall/door. [Volume is adjustable] The Ding machine can be adjusted appropriately in different environments. The volume is and Bluetooth has two connection methods, and the receiver placement is not restricted. It can be heard clearly in noisy environments with multiple settings. It is quiet and does not disturb the rest of the family. [Low power consumption] 3 external AA batteries (battery is not included when shipped). With the low power consumption design, the battery life is greatly improved, and you say goodbye to frequent charging. Power Suplly:3 external AA batteries (Not included batteries) Video effect:night vision possible Frame rate:30FPS Storage :cloud storage Power consumption:1W Detection :static detection, motion detection Scope of application:home security Device type:Wireless monitoring device Colour:White Material:Plastic Size:Doorbell host size 73x46x21mm, Dingdong machine size 40x40x32mm Package Contents: 1 * wireless doorbell 1 * Dingdong machine 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.