Video doorbell: When someone presses Video Doorbell, you can see it through the mobile APP. As long as the pairing is successful, no matter where you are, as long as there is a network, you can realize the doorbell visual function. When someone presses Video Doorbell, will send the message to the owner' phone and transponder. No matter where you are (network required), video doorbell can notify the owner by phone. WIFI/Bluetooth: video doorbell can be paired through WIFI 2.4G network and Bluetooth function. After successful pairing, you can realize visual and Internet calls on your mobile phone. You can operate according to the instructions in the manual. Photo and video recording: The doorbell has two response prompts: Internet phone call/sound. Alarm prompter can be used indoors for short distances. The mobile APP can be used for both long and short distances. When someone comes and presses Video Doorbell, you can take photos and videos through the mobile APP and save them in your mobile phone (manual operation). No need for any additional storage devices and no security risks. 19 sounds: The transponder has 19 sounds to choose from. Whether you are relaxing , doing fitness, or doing housework, just plug in the transponder (USB port). Always know there is a visitor outside your door. 90-Day Front Door Security: The video doorbell requires 3 AAA batteries (not included) and can be used for up to 3-6 months (the specific time depends on the number of button presses). And it's easy and convenient to replace. Make sure not to miss a single response. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:Photo Color Material:plastic Package Contents: 1 x Doorbell 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.